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(2007– )

Episode List

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2013

3 Jan. 2013
The Egg Salad Equivalency
When Penny finds out Alex has a crush on Leonard, Sheldon gets himself and the rest of the guys in trouble with Human Resources whilst trying to solve the problem.
 
10 Jan. 2013
The Bakersfield Expedition
The guys are stranded in the middle of nowhere when Leonard's car is stolen on the way to the Bakersfield Comic-Con. Back home, the girls try to figure out why the guys are so fascinated with comic books.
 
31 Jan. 2013
The Cooper/Kripke Inversion
Sheldon is forced to work with Kripke on a project and must concoct an elaborate lie when he can't hold up his end of the work. Howard and Raj get superhero figurines made of themselves.
 
7 Feb. 2013
The Spoiler Alert Segmentation
Leonard moves in with Penny after a fight with Sheldon, which causes Amy to want to move in with Sheldon. Meanwhile, Raj has a frightening experience with Howard's mom.
 
14 Feb. 2013
The Tangible Affection Proof
Sheldon gets Alex to buy a Valentine's Day gift for Amy. Leonard, Penny, Howard, and Bernadette have a disastrous dinner together. Raj and Stuart host a "Lonely People" party at the comic book store.
 
21 Feb. 2013
The Monster Isolation
Raj falls apart after his date sneaks out on him, and Sheldon reluctantly returns the favor after Penny helps him out with his "Fun With Flags" program.
 
7 Mar. 2013
The Contractual Obligation Implementation
Leonard, Sheldon, and Howard give lectures on science to junior high students. The girls ditch work to go to Disneyland. Raj devises a date for Lucy that fixes their social anxiety problems.
 
14 Mar. 2013
The Closet Reconfiguration
Leonard and Penny host a cocktail party. Whilst cleaning out Howard and Bernadette's closet, Sheldon finds a letter from Howard's father.
 
4 Apr. 2013
The Tenure Turbulence
Leonard, Sheldon, and Raj battle for tenure at the university and drag Penny and Amy into the fight.
 
25 Apr. 2013
The Closure Alternative
Amy tries to help a depressed Sheldon find closure when one of his favorite TV shows is canceled. Raj becomes paranoid when he finds Lucy's blog.
 
2 May 2013
The Proton Resurgence
Bernadette and Howard offer to watch Raj's dog and live to regret it. Leonard and Sheldon hire their favorite childhood star to make an appearance.
 
9 May 2013
The Love Spell Potential
A date between Raj and Lucy takes both of them out of their comfort zones. After a trip to Las Vegas goes awry, the girls join in on a Dungeons & Dragons game, which causes Amy and Sheldon to reevaluate their relationship.
 
16 May 2013
The Bon Voyage Reaction
Penny is thrown for a loop when Leonard is offered a job overseas, but the news is an even bigger shock to Sheldon. Raj wants more out of his relationship with Lucy than she can handle.
 
26 Sep. 2013
The Hofstadter Insufficiency
Sheldon and Penny bond over missing Leonard. Howard tries to help Raj get over his breakup with Lucy. Amy and Bernadette take a trip together to a biology convention.
 
26 Sep. 2013
The Deception Verification
Sheldon feels betrayed when Leonard returns from the North Sea and wants to spend his time with Penny instead of him. Howard's latest foray into helping his mother has some disastrous side effects.
 
3 Oct. 2013
The Scavenger Vortex
The gang gets competitive when they are forced to take part in Raj's scavenger hunt.
 
10 Oct. 2013
The Raiders Minimization
Sheldon gets mad at Amy for ruining one of his favorite movies. Raj & Stuart try to make their online dating profiles more appealing, and Leonard tries to play the sympathy card with Penny.
 
17 Oct. 2013
The Workplace Proximity
After a fight with Bernadette, Howard ends up on Raj's couch. Sheldon and Amy clash when Amy takes a job at the university.
 
24 Oct. 2013
The Romance Resonance
Howard tries to do something special to celebrate the anniversary of his first date with Bernadette. Sheldon is conflicted when he makes a major scientific breakthrough but some details have to be corrected.
 
7 Nov. 2013
The Proton Displacement
Sheldon seeks payback when Arthur "Professor Proton" Jeffries asks Leonard for help on a project instead of him. Raj gets upset at Howard for crashing his night with the girls.
 
14 Nov. 2013
The Itchy Brain Simulation
Sheldon demands Leonard make up for a mistake from their past. Penny confronts Raj's ex-girlfriend, Lucy.
 
21 Nov. 2013
The Thanksgiving Decoupling
The gang spends Thanksgiving at Mrs. Wolowitz's house. Howard tries to bond with his father-in-law, and a mistake from Penny's past comes back to haunt her.
 
5 Dec. 2013
The Discovery Dissipation
Leonard has to deal with the fallout of disproving Sheldon's new scientific discovery. Raj spends a week at Howard and Bernadette's apartment.
 
12 Dec. 2013
The Cooper Extraction
While Sheldon is at home in Texas, the rest of the gang decorate for Christmas and think about how much he has affected their lives.
 

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See also

Episode Cast | Rated Episodes (by date / vote)| TV Schedule

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