Season 6

Season 6 of The Big Bang Theory premiered on September 27, 2012, and ended on May 16, 2013. All of the seven regular actors on the show returned to their respective roles. The first episode taping began on August 14, 2012. It was announced that starting from this season, Kevin Sussman, who plays Stuart Bloom, would be a regular, though he is later demoted back to recurring. Starting with Howard's trip to the International Space Station, Penny is pushed deeper into her relationship with Leonard when Sheldon's graduate assistant Alex Jensen is interested in Leonard. The season ends with Leonard leaving for the North Sea to help Stephen Hawking prove a theory, and Raj undergoing a major social transition.
==Cast==
=== Main Cast ===
*Johnny Galecki as Leonard Hofstadter (24/24)
*Jim Parsons as Sheldon Cooper (24/24)
*Kaley Cuoco as Penny (24/24)
*Simon Helberg as Howard Wolowitz (24/24)
*Kunal Nayyar as Rajesh Koothrappali (24/24)
*Mayim Bialik as Amy Farrah Fowler (22/24)
*Melissa Rauch as Bernadette Rostenkowski-Wolowitz (23/24)
*Kevin Sussman as Stuart Bloom (8/24)
=== Recurring Cast ===
* Carol Ann Susi as Debbie Wolowitz (4/24)
* Pasha D. Lychnikoff as Dimitri Rezinov (4/24)
* Mike Massimino as Himself (2/24)
* Margo Harshman as Alex Jensen (4/24)
* Regina King as Janine Davis (2/24)
* John Ross Bowie as Barry Kripke (2/24)
* Kate Micucci as Lucy (6/24)
* Ian Scott Rudolph as Captain Sweatpants (2/24)
* Owen Thayer as Lonely Larry (2/24)
=== Guest Cast ===
* Wil Wheaton as Himself
* Casey Sander as Mike Rostenkowski
* Stephen Hawking as Himself
* Brian Posehn as Bert Kibbler
* Jan Hoag as Lilian
* Ken Lerner as Dr. Schneider
* Janella Mara as Claire
* Ryan Cartwright as Cole
* Meagen Fay as Mrs. Rostenkowski
* Dakin Matthews as Santa
* Matt Battaglia as Officer Reynolds
* Josh Brener as Dale
* Briana Cuoco as Gretchen
* Riccardo LeBron as Tom
* Bob Newhart as Professor Proton
* Howie Mandel as Himself
* Buzz Aldrin as Himself
* LeVar Burton as Himself
==Episodes==
Episode (Series)	Episode (Season/Ep#)	Title 	Original Air Date 	Directed By 	Description
112 	601 	The Date Night Variable 	September 27, 2012	Mark Cendrowski	Sheldon, Amy, Leonard, and Penny all have dates, but Sheldon invites Raj to his date with Amy, upsetting Amy. As a result, Raj interrupts Leonard and Penny's, only to get kicked out when he tells Penny to acknowledge her feelings for Leonard, prompting him to go to the comic book store instead. Meanwhile, a still-in-space Howard gets in a dilemma with his wife and mother over where he will choose to live once he returns to Earth.
113 	602 	The Decoupling Fluctuation 	October 4, 2012 	Mark Cendrowski	Penny tries to figure out her feelings for Leonard with the help of Bernadette and Amy. Sheldon tries to get Penny to stay in the relationship. Stuart becomes Raj's new hang-out buddy to fill the gap left by Howard, and gets accepted into the social group by Sheldon. Meanwhile, Howard gets bullied by his fellow astronauts.
114 	603 	The Higgs Boson Observation 	October 11, 2012 	Mark Cendrowski	Sheldon hires an attractive grad student named Alex Jensen to help him. Amy gets jealous and asks Penny to spy on her at Caltech, only to find out that Alex is flirting with Leonard instead. Meanwhile, Howard informs Bernadette that he needs to stay in space for an additional 7-10 days.
115 	604 	The Re-Entry Minimization 	October 18, 2012 	Mark Cendrowski	Howard finally returns to Earth, only to discover that changes have happened that leave him dejected, such as Stuart replacing him as Raj's best friend and mother having an affair with his dentist. Bernadette is also too sick to comfort him. Meanwhile, Sheldon, Leonard, Penny, and Amy take part in a girls versus guys competition.
116 	605 	The Holographic Excitation 	October 25,2012 	Mark Cendrowski	Stuart wants to organize a Halloween party at his comic book store so Raj steps up to become the party planner. Bernadette has to deal with an annoying Howard who cannot stop talking about space. Penny decides to learn more about Leonard's job, and Sheldon and Amy are at odds on what to wear to the Halloween party.
117 	606 	The Extract Obliteration 	November 1, 2012 	Mark Cendrowski	Sheldon is excited when Stephen Hawking accepts his invitation to play a popular online game with him. Meanwhile, Penny considers telling Leonard about the fact that she is going back to school by taking a history class at a community college.
118 	607 	The Habitation Configuration 	November 8, 2012 	Mark Cendrowski	Sheldon tapes another episode of "Fun With Flags", only this time, the episode will focus on Star Trek flags so he brings his friend Wil Wheaton as a guest. Problems arise when Amy and Wil appear to dislike each other and Sheldon is torn on whose side to take. Meanwhile, Howard prepares to finally move out of mother's house to live with Bernadette.
119 	608 	The 43 Peculiarity 	November 15, 2012 	Mark Cendrowski	Raj and Howard are determined to find out what Sheldon is doing for twenty minutes every day in a storage room in the Caltech basement. Leonard is jealous of an English student that is working on a college project with Penny. She gets very angry at Leonard and makes a startling admission.
120 	609 	The Parking Spot Escalation 	Novembver 29, 2012	Peter Chakos 	After Howard gets himself a car, a fight occurs between him and Sheldon after it is made clear that his parking spot at the university actually belongs to Sheldon even though Sheldon doesn't own a car. The conflict eventually stirs hostility between Bernadette and Amy. Both parties resort to dastardly actions to get revenge.
121 	610 	The Fish Guts Displacement 	December 6, 2012 	Mark Cendrowski	Howard and Bernadette have dinner with her parents and Howard ends up invited on her father's weekend fishing trip. Penny gives the guys a lesson in the art of fishing. Amy isn't feeling well and Sheldon overcomes his initial objections to take care of his girlfriend.
122 	611 	The Santa Simulation 	December 13, 2012 	Mark Cendrowski	The guys decide to have a male night of Dungeons and Dragons which does not sit well with their better halves. The girls get dressed up and head out to a nightclub together taking Raj along.
123 	612 	The Egg Salad Equivalency 	January 3, 2013 	Mark Cendrowski	Sheldon gets all the guys before the Human Resources Department when he tries to talk to Alex about her advances to Leonard. Alex's actions also make Penny feel insecure and Leonard more confident.
124 	613 	The Bakersfield Expedition 	January 10, 2013 	Mark Cendrowski	While the guys attend the Bakersfield Comic-Con dressed as Star Trek: The Next Generation characters, the girls decide to explore their world of comic books and get deeper than they expected. Leonard's car is stolen while they are dressed in Star Trek costumes.
125 	614 	The Cooper/Kripke Inversion 	January 31, 2013 	Mark Cendrowski	Howard's nerd hobby gets him into money troubles. Sheldon is forced to work with Kripke. After Kripke's paper is better than Sheldon's, Sheldon ends up spreading rumors about a sexual relationship with Amy. 
126 	615 	The Spoiler Alert Segmentation 	February 7, 2013 	Mark Cendrowski	With Leonard mad at Sheldon, he moves in with Penny. Amy notes that she would be the perfect roommate for Sheldon since she knows him so well and he wouldn't have to break in someone else. Sheldon and Penny are not happy with these arrangements. Raj is trapped in the Wolowitz house with Howard's lonely mother.
127 	616 	The Tangible Affection Proof 	February 14, 2013 	Mark Cendrowski	The couples are getting ready for Valentine's Day. Leonard, Penny, Howard and Bernadette are going to dinner. Sheldon and Amy are trying to get the perfect gifts for each other. Raj and Stuart are planning a singles only party at The Comic Book Store.
128 	617 	The Monster Isolation 	February 21, 2013 	Mark Cendrowski	Sheldon has Penny as a guest on a "Fun with Flags" episode and she gets him to attend her acting class' presentation of "A Streetcar Named Desire". Raj becomes depressed for not having any girlfriend or relationship wio someone..
129 	618 	The Contractual Obligation Implementation	March 7, 2013 	Mark Cendrowski	Raj and Lucy have their first date meeting in a library and texting to each other. The guys have to promote science careers for women at Howard's old middle school, while the girls go to Disneyland and get made up as Disney Princesses.
130 	619 	The Closet Reconfiguration 	March 14, 2013 	Anthony Rich 	Sheldon rearranges Howard and Bernadette's closet and finds an unopened letter from his father sent for his 18th birthday. Penny and Leonard have a formal dinner party instead of take-out food.
131 	620 	The Tenure Turbulence 	April 18, 2013 	Mark Cendrowski	Competition between the guys increases when a slot for a tenured professor opens up and they start to schmooze the tenure committee members that include Janine Davis from Human Resources, whom Sheldon has crossed paths with before.
132 	621 	The Closure Alternative 	April 25, 2013 	Mark Cendrowski	Amy works on Sheldon's obsession to complete everything, Leonard tries to get Penny interested in "Buffy the Vampire Slayer" and Raj discusses with Lucy what she put in her blog about him.
133 	622 	The Proton Resurgence 	May 2, 2013 	Mark Cendrowski	The host of the children's science show Professor Proton is available for children's birthday parties, so Sheldon hires him since he was one of his childhood heroes. Howard and Bernadette watch Raj's dog for the weekend and she gets lost.
134 	623 	The Love Spell Potential 	May 9, 2013 	Anthony Rich 	After an aborted girls' trip to Vegas, everyone ends up playing Dungeons and Dragons together. Raj leaves after he finds that Lucy is free and he pushes her to do things that scare her. In the game, Penny casts a love spell on Sheldon and Amy's characters which gets Amy very upset because they are treating her and Sheldon's relationship as a joke.
135 	624 	The Bon Voyage Reaction 	May 16, 2013 	Mark Cendrowski	Leonard joins a team on a four-month overseas expedition which affects both Sheldon and Penny. Raj invites Lucy to meet his friends and attend a going away party. Amy volunteers to have dinner with Raj and Lucy.
de:Staffel 6
es:Sexta Temporada
it:Sesta stagione
pt-br:6ª temporada
 
Category:Seasons
 Season 06
Category:Sheldon Cooper
Category:Leonard Hofstadter
Category:Howard Wolowitz
Category:Rajesh Koothrappali
Category:Penny
Category:Bernadette Rostenkowski-Wolowitz
Category:Amy Farrah Fowler
Category:Stuart
Category:Mrs. Wolowitz
Category:Alex Jensen
Category:Shamy
Category:Holidays and Celebrations
Category:Mike Rostenkowski