Big Bang Theory - Season 6

Bernadette: Good for you. I just had a seemingly endless dinner with your mom.  Howard: Oh, yeah? That
S06E01 The Date Night Variable - 2012-09-27
Raj crashes Sheldon and Amy's second anniversary and interferes in Leonard and Penny's relationship. Howard gets caught in the middle of an argument between Bernadette and his mother.
Sheldon: That woman has a death wish, Leonard. She talks to strangers, she pets unfamiliar dogs, and it is ridiculously easy to break into her apartment. If I were you, I
S06E02 The Decoupling Fluctuation - 2012-10-04
Penny continues to have doubts about her relationship with Leonard. Meanwhile, Howard becomes the target of practical jokes on the space station.
Howard: I need you to go to my house. In my bedroom, you
S06E03 The Higgs Boson Observation - 2012-10-11
When Sheldon hires a female grad student to assist him, a jealous Amy asks Penny to help her spy on them. On the space station, Howard begins behaving erratically.
Howard: You okay?  Bernadette: A little dizzy. Must be the Benadryl. Switch places with me.  Howard: Okay.  Bernadette: Now, kiss me. (He does. She starts snoring)
S06E04 The Re-Entry Minimization - 2012-10-18
Howard is offended when his return from space is met with little fanfare. Penny and Amy take on Sheldon and Leonard during game night.
Amy: I
S06E05 The Holographic Excitation - 2012-10-25
While Raj plans Stuart's Halloween party at the comic book store, Howard annoys the rest of the gang by constantly talking about space, and Penny tries to take more of an interest in Leonard's work.
Leonard: Good morning, sunshine.  Penny: Leonard. It
S06E06 The Extract Obliteration - 2012-11-01
Penny enrolls in a college class and keeps it a secret from Leonard. Sheldon causes conflict with Dr. Stephen Hawking over an online game.
Amy: I
S06E07 The Habitation Configuration - 2012-11-08
Howard makes a decision whether or not to move out of his mother's house, while Sheldon is caught in the middle of an argument between Amy and Wil Wheaton.
Sheldon: This is Dr. Sheldon Cooper. Experimental log. Wormhole generator test forty-four. Howard: Wormhole generator test?
S06E08 The 43 Peculiarity - 2012-11-15
Leonard feels threatened after hearing about Penny's study partner at school, while Howard and Raj become determined to find out one of Sheldon's secrets.
Howard: Sheldon, that is a five hundred dollar limited edition collectible, and I want it back.  Sheldon: I
S06E09 The Parking Spot Escalation - 2012-11-29
The gang are drawn into a fight between Howard and Sheldon over Sheldon's vacant parking spot at the university.
Leonard: My dad was an anthropologist. The only father-son time he spent was with a 2,000-year-old skeleton of an Etruscan boy. I hated that kid.
S06E10 The Fish Guts Displacement - 2012-12-06
Howard tries to bond with Bernadette's father during a fishing trip. When Sheldon is obligated to take care of a sick Amy, she finds ways to take advantage of the situation.
Sheldon: Trees indoors, overuse of the words
S06E11 The Santa Simulation - 2012-12-13
The girls take Raj out to a nightclub to find him a date. A game of Dungeons and Dragons rekindle old memories of Santa for Sheldon.
Raj: I feel like I
S06E12 The Egg Salad Equivalency - 2013-01-03
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.
Howard: Sheldon, how is that a fight pose?  Sheldon: Mr. Data
S06E13 The Bakersfield Expedition - 2013-01-10
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.
Raj: Two words, 3-D printer. Wait, maybe it
S06E14 The Cooper/Kripke Inversion - 2013-01-31
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.
Sheldon: Leonard, please. You know Amy moving in marks a level of intimacy our relationship isn
S06E15 The Spoiler Alert Segmentation - 2013-02-07
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 mother.
Leonard: I know it
S06E16 The Tangible Affection Proof - 2013-02-14
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.
Leonard: Whoa.  Raj: What?  Leonard: Nope, just, just, whoa.
S06E17 The Monster Isolation - 2013-02-21
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.
Amy: I
S06E18 The Contractual Obligation Implementation - 2013-03-07
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.
Amy: You have something we want.  Sheldon: Oh, dear. My mother warned me this is what happens to pretty boys in the big city.
S06E19 The Closet Reconfiguration - 2013-03-14
Howard becomes upset when Sheldon finds a letter from his estranged father whilst cleaning out his and Bernadette's closet.
Raj: Come on, Daddy. All the other scientists have seat warmers. This is so humiliating.
S06E20 The Tenure Turbulence - 2013-04-04
Leonard, Sheldon, Raj and Kripke battle for tenure at the university.
Raj: It
S06E21 The Closure Alternative - 2013-04-25
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.
Sheldon: How could anybody hate Gino the Neutrino? It
S06E22 The Proton Resurgence - 2013-05-02
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.
Sheldon: Penny, we don
S06E23 The Love Spell Potential - 2013-05-09
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 and Dragons game, which causes Amy and Sheldon to re-evaluate their relationship.
Amy: And now he can talk. I want to cut open your brain and see what the heck
S06E24 The Bon Voyage Reaction - 2013-05-16
Penny is thrown for a loop when Leonard is offered a job overseas, but the news is an even bigger shock to Sheldon. Raj and Lucy's relationship comes to a crossroad.