The Big Bang Theory (season 9)

The Big Bang Theory (season 9)

Ninth season DVD cover art
Starring
Country of origin United States
No. of episodes 24
Release
Original network CBS
Original release September 21, 2015 (2015-09-21) – May 12, 2016 (2016-05-12)

The ninth season of the American sitcom The Big Bang Theory started airing on CBS on Monday, September 21, 2015.[1] It returned to its regular Thursday time slot on November 5, 2015 for the season's seventh episode.[2] It concluded on May 12, 2016. On March 12, 2014, The Big Bang Theory was renewed for an additional three years, extending it through the 2016–17 season for a total of ten seasons.[3] Laura Spencer was upgraded to the main cast during the season as Dr. Emily Sweeney, after being a recurring cast member for two seasons.

Production

Like the previous season, the first six episodes of the ninth season aired on a different night due to CBS acquiring the rights to Thursday Night Football games. In May 2015, CBS announced at its annual upfront presentation, that the series would begin its ninth season on Mondays, before returning to the Thursday slot once the football games ended.[4]

Filming for the ninth season began on August 5, 2015, according to posts on Twitter by several of the cast members including Melissa Rauch and Kunal Nayyar.[5][6]

Laurie Metcalf reprised her role as Sheldon's mother Mary in episodes 1 and 24, and Keith Carradine returned as Penny's father Wyatt in episode 3.[7]

Sheldon's maternal grandmother Constance who he calls "Meemaw" made her first long-awaited appearance in episode 14 and was portrayed by June Squibb[8] and Leonard's father Alfred also made his first long-awaited appearance in episode 24 and was played by Judd Hirsch.[9]

This was the first season to feature every main cast member of the show, including former main cast member Sara Gilbert, who made a guest appearance in the 200th episode.[10]

Cast

Main cast

Special guest cast

Recurring cast

Guest cast

Episodes

No.
overall		No. in
season		TitleDirected byWritten byOriginal air dateProd.
code		U.S. viewers
(millions)
1841"The Matrimonial Momentum"Mark CendrowskiStory by : Chuck Lorre & Jim Reynolds & Maria Ferrari
Teleplay by : Steven Molaro, Steve Holland & Eric Kaplan		September 21, 2015 (2015-09-21)4X720118.20[11]

Leonard and Penny go through with their plan to elope in Las Vegas and have the ceremony broadcast via livestreaming so their friends can watch it at home. Leonard created a touching science-based wedding vow while Penny recites "You've Got a Friend in Me". After Leonard carries Penny over the threshold and they start kissing, Penny is still bothered by Leonard's kissing another woman two years ago and is outraged when she learns the other woman, Mandy, works with Leonard, and when they return home, she goes to her apartment alone. Sheldon is confused and hurt about Amy's indecision about their relationship, and insults her while the friends have gathered to watch the wedding at Howard and Bernadette's house. Amy officially breaks up with him, causing everyone except Howard and Stuart to leave and due to being the only ones remaining, the two men catch the end of the wedding. Amy later rebuffs Stuart. Sheldon calls his mother to send back his great-grandmother's ring he had meant for Amy, but Mary tells him to wait things out. Sheldon briefly considers dating Mandy to get back at Amy, but cannot be with someone attracted to Leonard even though Penny is. Sheldon is angered that Penny knew that Amy was unhappy and did not defend him, and storms out. A dejected Leonard cannot believe he is spending his wedding night with Sheldon, though Sheldon says he always expected it.

Title reference: The events that are set in motion by Leonard and Penny eloping.
1852"The Separation Oscillation"Mark CendrowskiStory by : Steven Molaro & Steve Holland & Tara Hernandez
Teleplay by : Chuck Lorre & Jim Reynolds & Maria Ferrari		September 28, 2015 (2015-09-28)4X720215.23[12]

After having a nightmare of Sheldon and Penny passionately kissing, Leonard considers marriage counseling but finds it too expensive. Howard and Bernadette knew what Leonard did with Mandy Chow two years ago, leaving Raj annoyed Howard did not tell him. Bernadette also conceals this from Penny, but points out that Leonard has changed over the years, as he is confident now and with Penny because he loves her and not out of desperation. Leonard has a chat with Mandy, who feels no attraction to Leonard and neither remembers nor cares about kissing him in the first place. But while talking with her, Leonard realizes part of him may be trying to sabotage his marriage because he thinks he is not good enough for Penny. Penny confesses part of her is scared he will leave her for someone smarter. She and Leonard agree move past their fear and embrace their happiness. Sheldon surprises them with a trip to San Francisco, only to immediately announce he will also be going, as he bought the tickets for himself and Amy. Sheldon returns Amy's belongings, failing to make her jealous by "accidentally" including one of Penny's bras in the box. He records an episode of "Fun With Flags" alone, angrily talking about countries that have separated as a metaphor for Amy dumping him. Amy is furious and demands he remove the video, but Sheldon takes it as a sign she still wants him.

Title reference: Penny and Leonard get back together while Sheldon and Amy drift further apart.
1863"The Bachelor Party Corrosion"Mark CendrowskiStory by : Dave Goetsch & Jim Reynolds & Jeremy Howe
Teleplay by : Steven Molaro & Steve Holland & Eric Kaplan		October 5, 2015 (2015-10-05)4X720315.40[13]

Raj and Howard plan to kidnap Leonard to a secret location for the weekend as a belated bachelor party and forcefully take Sheldon with them. Meanwhile, the women have a small bachelorette party at Penny's apartment. Though Sheldon irritates Raj and Howard, he is impressed that the van in which they are driving belonged to physicist Richard Feynman, and that their plans are to stay at his vacation house in Mexico. When the van experiences a flat tire, a stuck lug nut prevents the men from fixing it. They try several scientific methods to remove it, each of which is unsuccessful, ultimately inadvertently setting the van on fire. Amy reveals that she has not told her family about her and Sheldon's breakup, explaining her intimidation by relating how her mother would make her sit in a "sin closet". Penny decides to pierce Amy's ears for her, and mentions that she has not told her family she married Leonard. She reluctantly calls her father Wyatt, who is simply happy for her, though he upsets Penny telling her that he accidentally killed her pet pig a year ago. The women cajole Amy into calling her mother, but when Amy finds it difficult to tell her mother about the breakup, Penny takes it upon herself to blurt out to Amy's mother about the breakup, the penis cookies and Amy's pierced ears. As a result, Amy's mother makes her sit in Penny's closet.

Title reference: The men's bachelor party plans being ruined by the corroded bolt holding the flat tire.
1874"The 2003 Approximation"Mark CendrowskiStory by : Chuck Lorre & Steve Holland & Eric Kaplan
Teleplay by : Steven Molaro & Maria Ferrari & Tara Hernandez		October 12, 2015 (2015-10-12)4X720414.96[14]

Leonard and Penny finally tell Sheldon they have moved in together now that they are married. Sheldon is upset, but Bernadette says he should try to find another roommate, though Stuart firmly rejects her idea that he move in with Sheldon. Sheldon rejects everyone he meets and Amy refuses to live with him, as they have just broken up. Sheldon tries to pretend that it is 2003, before he met Leonard, Penny and Amy, and before he developed emotional connections to other people, fearing that Leonard and Penny will eventually abandon him as well. For his sake, Leonard and Penny agree to split their time between apartments to be with Sheldon who begins to modify The Roommate Agreement for this purpose. Meanwhile, Stuart wants a band to play music in his comic book store for free. Raj and Howard write a filk song about Thor fighting Indiana Jones, though Emily suggests it would be better if people could dance to the music. Raj and Howard momentarily break up the band but quickly make up, playing the song at the store only to have Stuart say they should play music people could dance to.

Title reference: Sheldon resets his life and his apartment back to 2003 when he was happier and unemotional before he met Leonard.
1885"The Perspiration Implementation"Mark CendrowskiStory by : Chuck Lorre & Eric Kaplan & Maria Ferrari
Teleplay by : Steve Holland & Jim Reynolds & Saladin Patterson		October 19, 2015 (2015-10-19)4X720514.68[15]

Howard builds a machine to add mileage to the Fitbit Bernadette buys to track his exercise. Leonard, however, decides that the group should become more active and they take up the sport of fencing, attending a class taught by Barry Kripke. After learning that Amy is single, Kripke wants to ask her out, which upsets Sheldon. The men go to a sports bar and encourage Sheldon to move on. Sheldon randomly asks two women out and is rejected. Stuart asks Penny, Bernadette, and Amy for advice on how to attract more female customers to his comic book store and they conclude that his creepy behavior is the problem. Amy sympathizes with him for being lonely, but turns him down when he hits on her. She also rejects Kripke after he sends her a photograph of him nude. When Leonard and Sheldon return home from the bar, they run into Amy and Bernadette, leading to a chat between Sheldon and Amy, who awkwardly exchange anecdotes on their attempts to move on.

Title reference: The men getting all sweaty from exercising.
1896"The Helium Insufficiency"Mark CendrowskiStory by : Steve Holland & Maria Ferrari & Anthony Del Broccolo
Teleplay by : Steven Molaro & Eric Kaplan & Jim Reynolds		October 26, 2015 (2015-10-26)4X720716.32[16]

Swedish physicists are about to prove Sheldon and Leonard's super-fluid hypothesis about the universe and the men need liquid helium to conduct their experiment first. Kripke refuses to let them use any of the university's helium. Howard connects them to Kenny, a black market dealer, though Sheldon's mistrust of him almost ends the deal. At the lab, Leonard and Sheldon panic about using stolen property and pay Kenny to take it back. Kripke offers to give them some of his helium if they share scientific credit with him. Instead, they pay Kenny for helium a third time and watch Ernest Goes to Jail with him because he gets along with Sheldon. Meanwhile, Stuart tells the rest of the group he has been on two dates thanks to an app on his phone. They download it on Amy's phone much to her discomfort and make fun of the suggested men. To their surprise, a man named Dave texts Amy his thanks for the date they had last night. Amy reveals she has been on three coffee dates with men and is starting to like Dave.

Title reference: Sheldon and Leonard do not have enough helium on hand to perform their experiment.
1907"The Spock Resonance"Nikki LorreStory by : Chuck Lorre & Jim Reynolds & Tara Hernandez
Teleplay by : Steven Molaro & Steve Holland & Jeremy Howe		November 5, 2015 (2015-11-05)4X720614.81[17]

Wil Wheaton arranges for Sheldon to be interviewed for a documentary about Spock and Leonard Nimoy by his son Adam. Sheldon explains he admired the character of Spock from childhood for being unemotional and tried to imitate him. He brings up the autographed napkin from Nimoy from "The Bath Item Gift Hypothesis" that he keeps with his valuables, including the engagement ring he meant for Amy. His aborted proposal to Amy shocks Leonard and Penny who push Sheldon to admit he is feeling hurt. Sheldon lashes out, but decides to propose to Amy anyway for closure. From a distance, he sees her kiss another man, Dave, goodbye outside her apartment building. Sheldon leaves dejected. At home, he is upset Spock's way of life is a lie, and Leonard tells him to start focusing on the real people in his life. Meanwhile, Bernadette wants to start renovating the house, though Howard protests against changing his childhood home. Calling in her father Mike, he asks why Howard does not want children. Howard reveals Bernadette to be the one resisting parenthood. Raj theorizes she fears it because Howard acts so childish. Howard says he always dreamed of being a responsible father to make up for his own abandonment in childhood. Bernadette promises to think about it.

Title reference: Sheldon oscillating between his love for the unemotional Spock and his love for Amy.
1918"The Mystery Date Observation"Mark CendrowskiStory by : Steven Molaro & Eric Kaplan & Jim Reynolds
Teleplay by : Chuck Lorre & Steve Holland & Tara Hernandez		November 12, 2015 (2015-11-12)4X720814.92[18]

Amy has another date with Dave, so Bernadette and Penny decide to spy on her, dragging Leonard along. During the date, Dave reveals he is a huge fan of Sheldon's scientific work. He asks her about Sheldon the entire time, greatly annoying her. As they leave, Bernadette hits Dave's car. Initially outraged about the accident, Dave meets Leonard and is instantly starstruck. Amy ends it with Dave, who is happy to have kissed and been rejected by the same woman as Dr. Sheldon Cooper. Meanwhile, Sheldon struggles to move on without Amy, so he asks Howard and Raj to set him up with another woman since they introduced him to Amy. They post an ad on Craigslist that is filled with scientific and science-fiction brain teasers to solve for Sheldon's contact information that night. Fifteen seconds after the deadline, a woman named Vanessa shows up, sharing many of Sheldon's interests including physics, flags, and obscure languages. He does like her, but shuts the door on her for exceeding the time limit.

Title reference: Bernadette and Penny spying with Leonard on Amy and her date.
1929"The Platonic Permutation"Mark CendrowskiStory by : Jim Reynolds & Jeremy Howe & Tara Hernandez
Teleplay by : Steve Holland & Maria Ferrari & Adam Faberman		November 19, 2015 (2015-11-19)4X720915.19[19]

Sheldon and Amy decide to try and be friends and spend Thanksgiving day at the aquarium together. Despite initial awkwardness and annoyances, Amy answers Sheldon's questions about her dating life honestly, and they agree they each want the other to be happy. They fall back into their old relationship as friends. Later, Amy calls Sheldon and asks to be his girlfriend again. Sheldon declines, explaining that getting over her was too difficult, and wishes to remain friends. Amy hides her hurt feelings over this. Bernadette, Raj and Emily drag Howard to a soup kitchen to volunteer for the day. Howard is irritated at washing dishes, but is shocked when he meets Elon Musk, the founder of SpaceX. They bond over space travel. Meanwhile, Leonard and Penny prepare Thanksgiving dinner. Leonard realizes Penny does not know his birthday. He then proceeds to list personal things he knows about her, but accidentally reveals he knows she hates some orange lingerie he once bought her, something she never told anybody, but only wrote in her journal. As an apology for reading her journal without permission, Leonard wears the lingerie and dances around for Penny, asking her to post an image of him in the lingerie on her social media as punishment. Penny refuses, but Howard, Raj, Bernadette, and Emily catch Leonard wearing the lingerie when they barge into his apartment.

Title reference: Sheldon and Amy spend the day at the aquarium as friends and, afterwards, they switch roles in which of them wants to start dating again and the other just wants to remain friends.
19310"The Earworm Reverberation"Mark CendrowskiStory by : Eric Kaplan & Jim Reynolds & Saladin Patterson
Teleplay by : Steven Molaro & Steve Holland & Jeremy Howe		December 10, 2015 (2015-12-10)4X721015.27[20]

Sheldon is humming the melody to a song he does not know the name of, which is especially unusual since he has an eidetic memory. He spends two days obsessing over the tune and recording a log while he is still mentally sound, fearing he might be turning into a mad genius, thus annoying Leonard and Penny. Sheldon finally realizes the song is "Darlin'" by the Beach Boys and that the lyrics relate to how Amy made him a better man. He rushes to her apartment. Amy calls Dave for another date at her place, though Bernadette cautions that could lead to intimacy. Although Dave brings up Sheldon again, the date goes well and they kiss once as Sheldon arrives to profess his feelings. With Dave's help, Amy realizes Sheldon loves her and wants to get back together. She agrees and they kiss passionately. Dave then asks Sheldon if he wants to discuss physics, only to be kicked out of Amy's apartment. Meanwhile, Howard and Raj's fan page for their filk band is liked by a person named Trent. They stalk Trent online and think he is very cool, deciding to go meet him in a café. However, the image they have of him is ruined when they see him pick his nose and eat his own booger, causing them to run out.

Title reference: The effects of the song stuck in Sheldon's head which is called an earworm.
19411"The Opening Night Excitation"Mark CendrowskiStory by : Steven Molaro & Eric Kaplan & Tara Hernandez
Teleplay by : Steve Holland & Jim Reynolds & Maria Ferrari		December 17, 2015 (2015-12-17)4X721117.23[21]

After an iconic Star Wars-like opening credit crawl, the men are overjoyed to get opening night tickets to the Star Wars: The Force Awakens movie, which premieres on Amy's birthday. Sheldon still wants to see it, despite Penny saying he should be with Amy. Sheldon has a dream/visitation where Arthur Jeffries' ghost talks with him while dressed as a Jedi master, and convinces him Amy is more important. Talking over birthday gift ideas with Penny and Bernadette, he shocks them by saying he is going to have coitus with Amy to show her how much she means to him. On Amy's birthday, Sheldon and Amy are nervous about having sex, but enjoy the experience more than they expected. Sheldon wants to do it again on her next birthday, which is fine with Amy. Arthur later appears to Sheldon again, asking for details, but Sheldon only wants to discuss the movie. Meanwhile, the rest of the men go to the movie with Wil Wheaton, who arrives dressed as Spock in a Star Trek uniform. After the movie, the men lie back in the afterglow, much like Sheldon and Amy did.

Title reference: The excitement generated by opening night for Star Wars: The Force Awakens and Amy/Sheldon losing their virginity.
19512"The Sales Call Sublimation"Mark CendrowskiStory by : Steve Holland & Jim Reynolds & Saladin K. Patterson
Teleplay by : Steven Molaro & Maria Ferrari & Anthony Del Broccolo		January 7, 2016 (2016-01-07)4X721215.85[22]

Penny cannot find a way to make a sales call on psychiatrist Dr. Gallo. She has Leonard pose as a patient to get her in the door. Dr. Gallo disagrees with the way Leonard's mother approaches psychology. Leonard feels great talking with her. When Penny meets her, Dr. Gallo has her question why she often acts like a mother to Leonard, along with her other anxieties, such as Sheldon. She also makes Penny feels better after their talk. Dr. Gallo gives her a prescription, but not the one Penny was supposed to sell. While Amy is at a conference, Sheldon spends the day at the astronomy lab with Raj. After they discover a medium-sized asteroid, they argue about what to name it; Leonard suggests they name it after their girlfriends. Sheldon gets Raj to name it after Amy in exchange for any children Sheldon and Amy have being named Rajesh, even their daughters. Howard and Bernadette want to start remodeling the house and are excited when Stuart moves out, but are surprised when they find they miss him. Stuart sneaks back at night to watch them sleep.

Title reference: Leonard posing as a patient to help Penny's pharmaceutical sales
19613"The Empathy Optimization"Mark CendrowskiStory by : Chuck Lorre & Eric Kaplan & Dave Geotsch
Teleplay by : Steven Molaro & Steve Holland & Saladin K. Patterson		January 14, 2016 (2016-01-14)4X721315.75[23]

While Amy is still away, Sheldon has recovered from the flu, but though his friends attempt to help him, his rude behavior during his illness offends them. They decide to rent a party bus to Las Vegas to get away from him. Amy admits she extended her trip to avoid him as well, and teaches Sheldon about empathy. After Sheldon realizes what he did was wrong, he apologizes to his friends, but his apology to Emily goes wrong when he says dermatologists are not real doctors. When Raj tries to defend Sheldon, it leads to a fight between him and Emily. Sheldon decides not to go to Las Vegas with the group as a gesture of his regret, but sneaks on the bus with Stuart to make amends with Emily and fix things between her and Raj. Sheldon and Stuart then leave, but the others decide to let Sheldon and Stuart go with them after all.

Title reference: Sheldon trying to feel and understand empathy.
19714"The Meemaw Materialization"Mark CendrowskiStory by : Chuck Lorre & Jim Reynolds & Maria Ferrari
Teleplay by : Steven Molaro & Steve Holland & Tara Hernandez		February 4, 2016 (2016-02-04)4X721415.29[24]

Sheldon's grandmother "Meemaw" visits Pasadena to check out Amy. Meemaw distrusts Amy due to their breakup and lets slip that Sheldon had planned to propose. Both Sheldon and Amy tell Meemaw how they make each other a better person, so Meemaw tells them that she won't stand in their way. Meanwhile, Raj has a debate about Frozen with Howard, attracting the attention of Claire, a bartender working on a science-fiction screenplay for a children's film. She asks Raj to meet her for a scientific perspective on her plot. Raj wants to do this, but Howard and Bernadette warn him it could upset Emily. Raj is unsure where things are going with her, but eventually tells Claire he has a girlfriend. Claire says they can still meet as two platonic adults. However, at the meeting, Raj fantasizes about having a family with Claire.

Title reference: Sheldon's grandmother or 'Meemaw' finally appearing after being mentioned in a number of episodes.
19815"The Valentino Submergence"Mark CendrowskiStory by : Steve Molaro & Jim Reynolds & Tara Hernandez
Teleplay by : Steve Holland & Eric Kaplan & Jeremy Howe		February 11, 2016 (2016-02-11)4X721516.25[25]

Leonard and Penny go out to eat for Valentine's Day and realize that they are getting older after Penny is addressed as "Ma'am". Howard and Bernadette plan on using their new hot tub and find a rabbit floating in it. After nursing it back to health and naming it Valentino, the rabbit bites Howard, who heads off to the ER for a rabies shot. Bernadette decides for the moment not to tell him that she is pregnant. Raj finally decides to break up with Emily and then calls Claire, who has just gotten back together with her old boyfriend. Emily does not take him back, sending Raj into a depression. Sheldon and Amy host their first live episode of "Fun with Flags". Taking live phone calls, wherein Amy ends up speaking with Raj and Barry Kripke about their love lives, thoroughly depresses Sheldon. Amy does get Sheldon to admit their own breakup has made them a stronger couple. They are interrupted by Penny and Leonard, who barge in dressed as Cupids, throwing confetti in an effort to feel young again.

Title reference: The name given to the rabbit that almost drowns in the Wolowitz hot tub.
19916"The Positive Negative Reaction"Mark CendrowskiStory by : Eric Kaplan & Jim Reynolds & Saladin Patterson
Teleplay by : Steven Molaro & Steve Holland & Maria Ferrari		February 18, 2016 (2016-02-18)4X721615.24[26]

Bernadette tells Howard she is pregnant. While he is excited at first, he begins panicking that he will be a bad parent. When Howard talks things over with the men, Sheldon is upset that a baby will change their social group. The others try to calm him down at a karaoke bar and come up with a possible way for him to make more money by expanding on Sheldon and Leonard's research and patenting the idea. A drunk Sheldon says that, because he and Howard both grew up without fathers, Howard will know how important he is to his own child. Meanwhile, Bernadette meets with the women to tell them, though Leonard texts Penny beforehand. She is worried by Howard's reaction, but Amy and Penny tell her life will be better with a child. Bernadette shocks them by admitting the baby was conceived on Sheldon's bed. After their ideas for fun all turn out to be impossible to do because Bernadette is pregnant, the men invite them to sing karaoke with them. Howard and Bernadette soothe each other's fears. Everyone takes turns singing about babies to Bernadette, while Sheldon is shocked to learn what happened in his bedroom.

Title reference: Howard's initially negative reaction to Bernadette's positive pregnancy test.
20017"The Celebration Experimentation"Mark CendrowskiStory by : Chuck Lorre & Eric Kaplan & Jeremy Howe
Teleplay by : Steven Molaro & Steve Holland & Tara Hernandez		February 25, 2016 (2016-02-25)4X721715.94[27]

When Amy plans a birthday party for Sheldon because he made her birthday so special, he is reluctant on account of a traumatic childhood experience in which his sister's friends lied to him that Batman was coming to his sixth birthday, thereby ruining all his birthdays thereafter. Nonetheless, he relents, and the friends hire TV's Batman, Adam West, to attend as their present. When Sheldon arrives, he is initially happy, but quickly panics and runs into the bathroom. Penny tries to talk to him and they open up to one another. He emerges to apologize to everyone, after which Amy and all assembled share a toast in Sheldon's honor. Sheldon is delighted to hear all the nice things said about him. They then receive a video call from Professor Stephen Hawking, who joins them in singing "Happy Birthday to You".

Title reference: Sheldon allows the group to experiment by giving him a birthday party.
20118"The Application Deterioration"Mark CendrowskiStory by : Steven Molaro & Eric Kaplan & Adam Faberman
Teleplay by : Steve Holland & Jim Reynolds & Maria Ferrari		March 10, 2016 (2016-03-10)4X721814.68[28]

Sheldon, Leonard, and Howard move forward with patenting their gyroscope idea, but are shocked to learn that, as Caltech employees, they are only entitled to 25% of any profits, and that Howard, as a NASA employee, is not legally entitled to any profits. They reluctantly agree to sign, allowing Sheldon to write their own contract to share the money from the remaining 25% with Howard. Bernadette is against this, as Sheldon belittles Howard every time they try to work together. When confronted about this, Sheldon agrees to make it part of the contract that he be respectful of Howard for the purposes of the patent. Sheldon also shows his generosity by stipulating that 1/4 of his profits will go to a scholarship fund for the Wolowitzs' baby. Meanwhile, Emily sends Raj a belated Valentine's gift and wants to see him again. Raj turns to the women for advice, but decides to go through with seeing her after they say he shouldn't. On his way there, Claire calls him to say she is now single and he should see her instead, since Emily is just manipulating him. Raj drives back and forth while talking to both women, unsure of whom he should see, before choosing Emily and ultimately sleeping with her.

Title reference: The men being shocked that, to apply for a patent, they must give up most of their profits.
20219"The Solder Excursion Diversion"Mark CendrowskiStory by : Bill Prady & Eric Kaplan & Maria Ferrari
Teleplay by : Steven Molaro & Steve Holland & Saladin K. Patterson		March 31, 2016 (2016-03-31)4X721914.24[29]

While Leonard and Howard work in Howard's lab, their wives join them and help them with their project. After leaving to pick up more solder, the two men are invited to see a preview of Suicide Squad and decide to lie to their wives and attend. Howard spitefully texts Raj, unaware that he is in the lab with the women. Raj is ready to help the women out their husbands' lie, but the men show up with flowers and an apology. Sheldon's old laptop finally dies, so Amy buys him a new one. He does not want to dispose of the broken one and takes Amy to a storage facility, where he reveals that he has never thrown anything away, including clothes, broken electronics, and toothbrushes. Amy now feels closer to him. Sheldon sends her home so that he can Skype with her on his new high-resolution laptop.

Title reference: Leonard and Wolowitz attending the movie screening instead of acquiring the soldering equipment for their experiment.
20320"The Big Bear Precipitation"Mark CendrowskiStory by : Chuck Lorre & Dave Goetsch & Tara Hernandez
Teleplay by : Steven Molaro & Steve Holland & Jim Reynolds		April 7, 2016 (2016-04-07)4X722013.50[30]

Amy convinces Sheldon to go with Leonard and Penny to spend the weekend at a cabin in the woods. Sheldon is phobic to everything in the outdoors. After their hike is rained out, they play the game "Never Have I Ever", where Sheldon exposes Leonard's extra bank account that he kept a secret from Penny. Penny gets mad, but reluctantly understands. She admits she is unhappy in pharmaceutical sales, but also does not want to go back to acting or waitressing. She resolves to stick to her job in order to be adult and pay off her credit card debt. Sheldon admits he was arrested once in a jaywalking incident and Amy once pushed all the buttons in an elevator. Raj gets too involved in Bernadette's pregnancy by suggesting specialists and buying a huge teddy bear. Howard tells him to back off, until Bernadette gets upset and wants both him and the bear back. He returns, and the three listen to the baby's heartbeat, though Raj gets a little too close again.

Title reference: Rain disrupting the group's weekend plans at a cabin in Big Bear, as well as Raj buying Howard and Bernadette a large teddy bear to celebrate their pregnancy.
20421"The Viewing Party Combustion"Mark CendrowskiStory by : Eric Kaplan & Maria Ferrari & Jeremy Howe
Teleplay by : Steven Molaro & Steve Holland & Tara Hernandez		April 21, 2016 (2016-04-21)4X722114.16[31]

As the group prepares to watch Game of Thrones at the apartment, Leonard refuses to go to Sheldon's quarterly roommate agreement meeting and is further annoyed when Penny takes Sheldon's side. Amy arrives and agrees with Leonard, stating her dislike of meetings regarding the relationship agreement. On the way there, Raj constantly brags about dating both Emily and Claire, annoying Howard. Stuart shows up in costume because Howard tricked him into wearing it. The group splits up, with Sheldon, Penny, Raj, and Stuart in one apartment and Leonard, Amy, and Howard across the hall. Leonard is further upset to learn Penny goes behind his back to Sheldon to get what she wants in the roommate agreement. Amy only took Leonard's side because she is jealous of how close Sheldon and Penny are. Howard accidentally eats pistachios and has to go to the hospital after an allergic reaction. He is alright. The group compare all their scheming to the characters on the Game of Thrones series. The men later make fun of Stuart riding home on a bike while still in costume.

Title reference: The group having a big argument during a party to watch a television show.
20522"The Fermentation Bifurcation"Nikki LorreStory by : Steven Molaro & Jim Reynolds & Anthony Del Broccolo
Teleplay by : Chuck Lorre & Steve Holland & Tara Hernandez		April 28, 2016 (2016-04-28)4X722214.13[32]

Penny wins a wine-tasting trip at work, so everyone but Sheldon and a pregnant Bernadette joins her. Raj is still dating both Emily and Claire, but is not exclusive with either and decides to bring Claire, asking his friends not to bring up their relationship status. They meet Penny's old boyfriend Zach, who raises the potential military applications of Leonard and Howard's gyroscope system. This worries them, but Howard decides he still needs the money for his baby, so they move forward. Zach also flirts with Claire and questions why Raj is not more committed to her. Claire tricks Raj into admitting he is seeing someone else too. At home, Sheldon bores Bernadette with his love of trains and different types of toast, but she does enjoy a version of Dungeons & Dragons, in which her character is not pregnant and can enjoy alcohol, sushi, and hot tubs. She thanks him for a fun break from her pregnancy.

Title reference: The group separates into two branches because of the wine tasting trip.
20623"The Line Substitution Solution"Anthony RichStory by : Steve Holland & Saladin K. Patterson & Tara Hernandez
Teleplay by : Steven Molaro & Eric Kaplan & Maria Ferrari		May 5, 2016 (2016-05-05)4X722313.22[33]

Leonard has Penny pick his mother Beverly up from the airport to avoid her and then attend a Q&A. Penny tries to bond with her, but is subjected to her analytical and condescending remarks and feels lost when Amy and Bernadette talk science, bonding in front of her. Beverly offers to interview Amy, Bernadette, and their significant others for a new book on high-achieving couples, but when Bernadette suggests that she talk to Penny too, Beverly replies "About what?", this is the last straw for Penny who is now completely angry with Beverly, has had enough, yells at her and expresses her feelings of being insulted and Beverly reveals that it's because she herself was insulted that she wasn't invited to her son's wedding or even being told that it was taking place. Penny suggests they have another small ceremony for Beverly and they bond. Sheldon hires Stuart to go shopping with Amy for him so he can keep his own place in line for the Q&A session with the guys. Amy is annoyed and pays Stuart to yell at Sheldon and also rejects Sheldon sending Stuart with flowers and an apology. Stuart holds Sheldon's place in line while Sheldon goes to quickly apologize to Amy himself. However, Sheldon's experience is ruined when another man joins his friends in the line ahead of Sheldon and nobody else gets upset about him "cutting".

Title reference: Sheldon hires Stuart to hold his place in line while he apologizes to Amy.
20724"The Convergence Convergence"Mark CendrowskiStory by : Steven Molaro & Tara Hernandez & Adam Faberman
Teleplay by : Chuck Lorre & Steve Holland & Jeremy Howe		May 12, 2016 (2016-05-12)4X722414.73[34]

When Leonard and Penny announce their second wedding ceremony, conflict arises between Leonard's parents Beverly and Alfred. Sheldon has also invited his mother Mary. Beverly and Mary are distant with each other, while Beverly and Alfred bicker. While the Hofstadters snipe at each other during dinner, Mary and Alfred bond over their dislike of Beverly and leave early, since they are staying at the same hotel. Sheldon and Leonard are later worried when neither parent will answer their phones that night, though Penny is amused at the thought that their parents are becoming closer. When Howard gets an e-mail from the U.S. Air Force about his gyroscope patent, he fears that the government is after him, due to negative portrayals of them in the media. Bernadette tries to convince him that he is paranoid, but Howard's fears increase when he sees a car following them to dinner, unaware that it is Leonard and Penny. His attempt to evade them causes him to drive recklessly, and he is pulled over by a policeman for a sobriety test.

Title reference: Everyone converging on the dinner before Leonard and Penny's second wedding ceremony.

Ratings

No. Title Air date Rating/share
(18–49)		 Viewers
(millions)		 DVR
(18–49)		 DVR viewers
(millions)		 Total
(18–49)		 Total viewers
(millions)
1 "The Matrimonial Momentum" September 21, 2015 4.7/16 18.20[11] 2.1 5.52 6.8 23.73[35]
2 "The Separation Oscillation" September 28, 2015 3.8/16 15.23[12] 2.1 5.55 5.9 20.78[36]
3 "The Bachelor Party Corrosion" October 5, 2015 3.9/13 15.40[13] 2.1 5.47 6.0 20.87[37]
4 "The 2003 Approximation" October 12, 2015 3.9/13 14.96[14] 2.0 5.07 5.9 20.03[38]
5 "The Perspiration Implementation" October 19, 2015 3.9/13 14.68[15] 2.0 5.51 5.9 20.20[39]
6 "The Helium Insufficiency" October 26, 2015 4.4/14 16.32[16] 1.9 4.85 6.3 21.18[40]
7 "The Spock Resonance" November 5, 2015 3.7/13 14.81[17] 2.1 5.19 5.8 20.00[41]
8 "The Mystery Date Observation" November 12, 2015 3.7/13 14.92[18] 2.2 4.98 5.9 19.90[42]
9 "The Platonic Permutation" November 19, 2015 3.8/13 15.19[19] 2.4 5.93 6.2 21.23[43]
10 "The Earworm Reverberation" December 10, 2015 3.8/14 15.27[20] 2.5 6.20 6.3 21.47[44]
11 "The Opening Night Excitation" December 17, 2015 4.1/16 17.23[21] 2.9 7.17 7.0 24.42[45]
12 "The Sales Call Sublimation" January 7, 2016 3.8/14 15.85[22] 2.1 5.10 5.9 20.95[46]
13 "The Empathy Optimization" January 14, 2016 3.8/13 15.75[23] 2.1 5.17 5.9 20.93[47]
14 "The Meemaw Materialization" February 4, 2016 3.8/13 15.29[24] 2.1 5.33 5.9 20.62[48]
15 "The Valentino Submergence" February 11, 2016 3.8/14 16.25[25] 2.3 5.78 6.1 22.03[49]
16 "The Positive Negative Reaction" February 18, 2016 3.8/13 15.24[26] 1.9 5.17 5.7 20.41[50]
17 "The Celebration Experimentation" February 25, 2016 3.8/13 15.94[27] 2.1 5.21 5.9 21.15[51]
18 "The Application Deterioration" March 10, 2016 3.5/13 14.68[28] 2.0 4.80 5.5 19.49[52]
19 "The Solder Excursion Diversion" March 31, 2016 3.5/14 14.20[29] 2.0 4.98 5.5 19.19[53]
20 "The Big Bear Precipitation" April 7, 2016 3.1/11 13.50[30] 1.9 5.28 5.0 18.78[54]
21 "The Viewing Party Combustion" April 21, 2016 3.2/12 14.16[31] 2.0 4.92 5.2 19.07[55]
22 "The Fermentation Bifurcation" April 28, 2016 3.4/12 14.13[32] 2.0 5.12 5.4 19.25[56]
23 "The Line Substitution Solution" May 5, 2016 3.0/12 13.22[33] 2.0 4.98 5.0 18.21[57]
24 "The Convergence Convergence" May 12, 2016 3.4/14 14.73[34] 2.1 5.24 5.5 19.96[58]

Notes

    References

    1. ↑ Fitzpatrick, Kevin (June 9, 2015). "CBS 'Supergirl' Sets October Premiere, Plus More Fall Schedules". Screencrush. Retrieved June 9, 2015.
    2. ↑ "Shows A-Z – big bang theory, the on cbs". The Futon Critic. Retrieved August 10, 2015.
    3. ↑ "The Big Bang Theory: Renewed for THREE More Years!". March 12, 2014. Retrieved August 14, 2014.
    4. ↑ Barnes, Nick (May 14, 2015). "CBS 2015/16 Fall Schedule: The Big Bang Theory move, new premieres & midseason shows!". UnrealityTV. Retrieved August 10, 2015.
    5. ↑ Rauch, Melissa (August 5, 2015). "So great to be back! Here we go Season 9! @BigBang_CBS". Twitter. Retrieved August 10, 2015.
    6. ↑ Nayyar, Kunal (August 5, 2015). "Back to work this morning:) @BigBang_CBS season 9! Let's. Do. This. Who's in?". Twitter. Retrieved August 10, 2015.
    7. ↑ Abrams, Natalie (August 21, 2015). "Spoiler Room: Scoop on Big Bang, Murder, Supernatural and more". Entertainment Weekly. Retrieved August 22, 2015.
    8. ↑ http://www.ew.com/article/2016/01/06/big-bang-theory-june-squibb-sheldon-meemaw
    9. ↑ http://www.hollywoodreporter.com/live-feed/big-bang-theory-casts-leonards-876394
    10. ↑ Shepherd, Jack (February 6, 2016). "The Big Bang Theory 200th episode: Every star set to cameo, including Adam West and Sara Gilbert". The independent. Retrieved February 6, 2016.
    11. 1 2 "Monday Final Ratings: 'The Big Bang Theory' Adjusted Up; 'Significant Mother', 'Life in Pieces' & 'Penn & Teller' Adjusted Down - Ratings". TV by the Numbers.
    12. 1 2 Dixon, Dani (September 29, 2015). "Monday Final Ratings: 'The Big Bang Theory' + 'The Voice' Adjusted Up; 'Castle', 'Life in Pieces' & 'Dancing with the Stars' Adjusted Down". TV by the Numbers. Retrieved September 29, 2015.
    13. 1 2 Porter, Rick (October 6, 2015). "Monday Final Ratings: 'The Big Bang Theory' and 'The Voice' Adjusted Up; 'Blindspot' and 'Castle' Adjusted Down". TVbytheNumbers. Retrieved October 6, 2015.
    14. 1 2 Porter, Rick (October 13, 2015). "Monday final ratings: 'The Voice' and 'Big Bang Theory' adjusted up, 'Castle,' 'Life in Pieces' and 'Scorpion' adjusted down". TV by the Numbers. Retrieved October 13, 2015.
    15. 1 2 Porter, Rick (October 20, 2015). "Monday final ratings: 'Crazy Ex-Girlfriend' and 'Jane the Virgin' adjusted down, 'Big Bang' adjusted up". TV by the Numbers. Retrieved October 20, 2015.
    16. 1 2 Porter, Rick (November 3, 2015). "Monday final ratings: 'Supergirl' and 'Blindspot' adjust down, 'Big Bang Theory' adjusts up". TV by the Numbers. Retrieved November 4, 2015.
    17. 1 2 Porter, Rick (November 6, 2015). "Thursday Final Ratings: 'Elementary' and 'Mom' adjust down considerably thanks to NFL". TV by the Numbers. Retrieved November 6, 2015.
    18. 1 2 Porter, Rick (November 13, 2015). "Thursday final ratings: '2 Broke Girls' and CBS take NFL hit, 'Elementary' below 1.0, 'Blacklist' adjusts up". TV by the Numbers. Retrieved November 13, 2015.
    19. 1 2 Porter, Rick (November 20, 2015). "Thursday final ratings: 'Mom' and '2 Broke Girls' up even after adjusting down". TV by the Numbers. Retrieved November 20, 2015.
    20. 1 2 Porter, Rick (December 11, 2015). "Thursday final ratings: '2 Broke Girls' and other CBS shows adjust down with NFL pre-emptions". TV by the Numbers. Retrieved December 11, 2015.
    21. 1 2 Porter, Rick (December 18, 2015). "Thursday Final Ratings: 'Big Bang Theory' holds, season high for 'Mom' despite adjusting down". TV by the Numbers. Retrieved December 18, 2015.
    22. 1 2 Porter, Rick (January 8, 2016). "Thursday final ratings: 'Life in Pieces' adjusts down". TV by the Numbers. Retrieved January 8, 2016.
    23. 1 2 Porter, Rick (January 15, 2016). "Thursday final ratings: 'The Big Bang Theory' and 'The Blacklist' adjust up". TV by the Numbers. Retrieved January 15, 2016.
    24. 1 2 Porter, Rick (February 5, 2016). "Thursday final ratings: 'Big Bang Theory' adjusts up, 'Life in Pieces' and 'Mom' adjust down". TV by the Numbers. Retrieved February 5, 2016.
    25. 1 2 Porter, Rick (February 12, 2016). "Thursday final ratings: 'Mom' adjusts up". TV by the Numbers. Retrieved February 12, 2016.
    26. 1 2 Porter, Rick (February 19, 2016). "Thursday final ratings: 'Big Bang Theory,' 'Scandal' and 'How to Get Away with Murder' adjust up". TV by the Numbers. Retrieved February 19, 2016.
    27. 1 2 Porter, Rick (February 26, 2016). "Thursday final ratings: 'Big Bang Theory' adjusts up, 'Life in Pieces' adjusts down". TV by the Numbers. Retrieved February 26, 2016.
    28. 1 2 Porter, Rick (March 11, 2016). "Thursday final ratings: 'Scandal' adjusts up, 4 CBS shows adjust down". TV by the Numbers. Retrieved March 11, 2016.
    29. 1 2 Porter, Rick (April 1, 2016). "Thursday final ratings: 'Big Bang Theory' adjusts up, 'Scandal,' 'Life in Pieces' and 'The 100' adjust down". TV by the Numbers. Retrieved April 1, 2016.
    30. 1 2 Porter, Rick (April 8, 2016). "Thursday final ratings: 'Big Bang Theory' adjusts up, 'Odd Couple' and 'The 100' adjust down". TV by the Numbers. Retrieved April 8, 2016.
    31. 1 2 Porter, Rick (April 22, 2016). "Thursday final ratings: 'Big Bang Theory' and 'Bones' adjust up, '2 Broke Girls' and 'Legends of Tomorrow' adjust down". TV by the Numbers. Retrieved April 22, 2016.
    32. 1 2 Porter, Rick (April 29, 2016). "Thursday final ratings: 'Grey's Anatomy' and 'Big Bang Theory' adjust up, 'Odd Couple,' 'Mom' and 'The 100' adjust down". TV by the Numbers. Retrieved April 29, 2016.
    33. 1 2 Porter, Rick (May 6, 2016). "Thursday final ratings: 'Big Bang Theory' adjusts up, 'Mom' and 'Rush Hour' adjust down". TV by the Numbers. Retrieved May 6, 2016.
    34. 1 2 Porter, Rick (May 13, 2016). "Thursday final ratings: 'The Big Bang Theory,' 'The Catch' and 'Legends of Tomorrow' adjust up". TV by the Numbers. Retrieved May 13, 2016.
    35. ↑ Porter, Rick (October 12, 2015). "Premiere week Live +7 ratings: 'Blindspot,' 'Empire' and 'Big Bang Theory' score biggest gains". TV by the Numbers. Retrieved October 12, 2015.
    36. ↑ Porter, Rick (October 19, 2015). "Broadcast Live +7 ratings, week 2: 'The Blacklist' premiere joins 'Empire' and 'Blindspot' atop the charts". TV by the Numbers. Retrieved October 19, 2015.
    37. ↑ Porter, Rick (October 31, 2015). "Broadcast Live +7 ratings, week 3: 'Quantico' more than doubles, 'Empire' and 'Blindspot' score biggest gains". TV by the Numbers. Retrieved October 31, 2015.
    38. ↑ Porter, Rick (November 4, 2015). "Broadcast Live +7 ratings, week 4: 'Jane the Virgin' premiere doubles, 'Empire' and 'Blindspot' top charts for Oct. 12–18". TV by the Numbers. Retrieved November 4, 2015.
    39. ↑ Porter, Rick (November 9, 2015). "Broadcast Live +7 ratings, week 5: 'Empire' and 'Blindspot' have biggest toal gains, 5 shows double". TV by the Numbers. Retrieved November 9, 2015.
    40. ↑ Porter, Rick (November 16, 2015). "Broadcast Live +7 ratings: 'Big Bang Theory' and 'Blindspot' top week 6, 'Quantico' doubles in 18–49 and viewers". TV by the Numbers. Retrieved November 16, 2015.
    41. ↑ Porter, Rick (November 23, 2015). "Broadcast Live +7 ratings, week 7: 'Elementary' is still a strong DVR show". TV by the Numbers. Retrieved November 23, 2015.
    42. ↑ Porter, Rick (December 1, 2015). "Broadcast live +7 ratings, week 8: 'Empire,' 'Big Bang Theory' and 'Quantico' top charts for Nov. 9–15". TV by the Numbers. Retrieved December 1, 2015.
    43. ↑ Porter, Rick (December 7, 2015). "Broadcast Live +7 ratings, week 9: 'Big Bang Theory' makes the biggest gains". TV by the Numbers. Retrieved December 7, 2015.
    44. ↑ Porter, Rick (December 29, 2015). "Broadcast Live +7 ratings: 'Big Bang Theory' gets biggest bump of the season in week 12, 5 shows double in 18–49". TV by the Numbers. Retrieved December 29, 2015.
    45. ↑ Porter, Rick (January 5, 2016). "Broadcast Live +7 ratings: 'Big Bang Theory' and 'Jane the Virgin' lead a light week 13". TV by the Numbers. Retrieved January 5, 2016.
    46. ↑ Porter, Rick (January 25, 2016). "Broadcast Live +7 ratings: 'Shades of Blue' premiere gets a good lift in week 16". TV by the Numbers. Retrieved January 25, 2016.
    47. ↑ Porter, Rick (February 1, 2016). "Broadcast Live +7 ratings: 'Big Bang Theory' and 'Modern Family' lead week 17, 'Shades of Blue' doubles". TV by the Numbers. Retrieved February 1, 2016.
    48. ↑ Porter, Rick (February 22, 2016). "Broadcast Live +7 ratings: 'Big Bang Theory' gains the most, 'Vampire Diaries' and 'Shades of Blue' double". TV by the Numbers. Retrieved February 22, 2016.
    49. ↑ Porter, Rick (February 29, 2016). "Broadcast Live +7 ratings: 'How to Get Away with Murder,' 5 other shows double in a DVR-heavy week 21". TV by the Numbers. Retrieved February 29, 2016.
    50. ↑ Porter, Rick (March 7, 2016). "Broadcast Live +7 ratings: 'The Blacklist' and 'The Big Bang Theory' lead week 22". TV by the Numbers. Retrieved March 7, 2016.
    51. ↑ Porter, Rick (March 14, 2016). "Broadcast Live +7 ratings: 'Big Bang Theory' has biggest week 23 gain, 'Jane the Virgin' and 3 others double". TV by the Numbers. Retrieved March 14, 2016.
    52. ↑ Porter, Rick (March 28, 2016). "Broadcast Live +7 ratings: 'The Big Bang Theory' and 'Quantico' lead week 25". TV by the Numbers. Retrieved March 28, 2016.
    53. ↑ Porter, Rick (April 18, 2016). "Broadcast Live +7 ratings: 'The Big Bang Theory' and 'Empire' lead the week of March 28 – April 3". TV by the Numbers. Retrieved April 18, 2016.
    54. ↑ Porter, Rick (April 25, 2016). "Broadcast Live +7 ratings: 'Empire' and 'Big Bang Theory' stay on top for April 4–10". TV by the Numbers. Retrieved April 25, 2016.
    55. ↑ Porter, Rick (May 9, 2016). "Broadcast Live +7 ratings: 'Empire' and 'Big Bang Theory' lead for April 18–24, 5 shows double". TV by the Numbers. Retrieved May 9, 2016.
    56. ↑ Porter, Rick (May 17, 2016). "Broadcast Live +7 ratings: 'Big Bang Theory,' 'Empire' and 'Blacklist' lead for April 25 – May 1". TV by the Numbers. Retrieved May 17, 2016.
    57. ↑ Porter, Rick (May 23, 2016). "'Big Bang Theory' tops total gains, 'Vampire Diaries' and 9 others double in 18-49". TV by the Numbers. Retrieved May 23, 2016.
    58. ↑ Porter, Rick (May 31, 2016). "Broadcast Live +7 ratings: 'Big Bang Theory' finale and 'Empire' share lead for May 9–15". TV by the Numbers. Retrieved May 31, 2016.

    General references

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