Big Bang Theory - Season 5

Penny: I haven
S05E01 The Skank Reflex Analysis - 2011-09-22
The gang deal with the fallout from Penny and Raj's night together.
Penny! (knock knock) Penny! (knock knock) Penny! (knock knock)
S05E02 The Infestation Hypothesis - 2011-09-22
Amy gets inadvertently caught in the middle of a fight between Sheldon and Penny over a chair. Leonard tries to add some spice to his long-distance relationship with Priya.
Bernadette: Does your mother always cut your meat for you?  Howard: Only when it
S05E03 The Pulled Groin Extrapolation - 2011-09-29
Leonard accompanies Amy to a colleague's wedding. Howard tries to convince Bernadette to live with his mother after they get married.
Penny: Um, Raj, there
S05E04 The Wiggly Finger Catalyst - 2011-10-06
Penny sets up Raj with a deaf friend, not knowing that she's actually a gold digger, and Sheldon decides to let his minor decisions rest on the roll of the dice.
Wil Wheaton: Hey, I
S05E05 The Russian Rocket Reaction - 2011-10-13
Sheldon takes offense when Leonard wants to attend a party with Wil Wheaton, while Bernadette tries to block Howard's opportunity to go into outer space.
Penny: That top has paid for itself in free drinks like ten times what it cost. Sheldon: Yes, Penny has a lot of her money tied up in promiscuity futures.
S05E06 The Rhinitis Revelation - 2011-10-20
Sheldon gets upset when his mother comes to visit but refuses to cook for him and attend physics lectures.
Alice: I did evil. Would you be open to a trade?  Leonard: Uh, yeah, yeah, sure, I guess.  Alice: Okay. Here. This is my number, call me.
S05E07 The Good Guy Fluctuation - 2011-10-27
Sheldon tries to get into the spirit of Halloween by trying to scare the guys after they prank him. Leonard seeks Penny's advice when an attractive comic book artist takes an interest in him.
Amy (singing): Everybody hurts, sometimes everybody cries. Everybody hurts, sometimes.
S05E08 The Isolation Permutation - 2011-11-03
Amy is hurt when Penny and Bernadette go bridesmaid dress shopping without her, so she turns to a reluctant Sheldon for comfort.
Sheldon: Hummingbirds are the vampires of the flower world.  Raj: Still my first choice for an ankle tattoo. Or a dolphin, I go back and forth.
S05E09 The Ornithophobia Diffusion - 2011-11-10
Sheldon tries to overcome his fear of birds, while Leonard and Penny attempt to hang out together strictly as friends.
Sheldon: Did it look ridiculous when we got the Satanimals pack and I dressed up as a Beelzebobcat?
S05E10 The Flaming Spittoon Acquisition - 2011-11-17
When Stuart asks Amy on a date, Sheldon considers having a more serious relationship with her. Meanwhile, the guys become obsessed with a new card game involving Wild West heroes and witches.
Leonard: I want you out of my apartment right now.  Sheldon: Well said, Boy Wonder.  Jimmy: Or what?  Sheldon: Don
S05E11 The Speckerman Recurrence - 2011-12-08
Leonard confronts the man who bullied him in high school, while Penny realizes she did her fair share of tormenting in the past.
Amy: Our relationship agreement specifies that the second Thursday of every month, or the third Thursday in a month with five Thursdays, is date night. Penny: That is so hot.
S05E12 The Shiny Trinket Maneuver - 2012-01-12
Penny helps Sheldon work on his relationship with Amy when he trivializes one of her accomplishments. Howard is irked by Bernadette's dislike of children.
Penny: No, that
S05E13 The Recombination Hypothesis - 2012-01-19
Leonard and Penny contemplate reviving their romantic relationship.
Leonard: Thank you for hiding my Star Wars socks at the emergency room. Is it a good time to evaluate the beta test and see where we stand?  Penny: Things are looking good.
S05E14 The Beta Test Initiation - 2012-01-26
Leonard and Penny develop a system to ensure their dates go smoothly. Raj finally finds a woman he can talk to - the virtual assistant on his mobile phone.
Leonard: Once I tried carrying around a Duncan yo-yo, hoping the other kids would start calling me Duncan.  Howard: Did it work?  Leonard: No, they ended up calling me Sock Mouth. Because they took away my yo-yo and stuffed their socks in my mouth.
S05E15 The Friendship Contraction - 2012-02-02
Leonard signs out of his roommate agreement, reducing himself and Sheldon to mere acquaintances, while Howard tries to think of a cool astronaut nickname for himself.
Sheldon: Richard Feynman was a famous American physicist, part of the Manhattan project. Howard: Everyone in the world of science knows who Richard Feynman was. Sheldon: Now you do too.
S05E16 The Vacation Solution - 2012-02-09
When the university forces Sheldon to use vacation days, he decides to hang out in Amy's lab. Howard becomes upset when he hears Bernadette wants him to sign a prenuptial agreement.
Bernadette: I don
S05E17 The Rothman Disintegration - 2012-02-16
Sheldon battles Kripke for a coveted office at the university. Penny receives a very unusual gift from Amy.
Now who
S05E18 The Werewolf Transformation - 2012-02-23
Sheldon wreaks havoc when he tries to get a haircut from his regular barber, who is ill. Howard runs into a few problems with astronaut training.
Sheldon: (to Amy) I wouldn
S05E19 The Weekend Vortex - 2012-03-08
Sheldon has to choose between joining Amy at her aunt's birthday party or playing videogames all weekend with the guys.
Mr. Spock: Now, to the matter at hand, you need to play with the transporter toy. Sheldon: Yes, but it
S05E20 The Transporter Malfunction - 2012-03-29
Raj gets quite a surprise when he asks his parents to set him up on a date. Penny buys Leonard and Sheldon a pair of Star Trek keepsake collectibles.
Stephen Hawking: Your thesis that the Higgs boson is a black hole accelerating backwards through time is fascinating. Sheldon: Thank you. It just... came to me one morning in the shower. Stephen Hawking: That
S05E21 The Hawking Excitation - 2012-04-05
Sheldon uses any and all means to meet his hero, Dr. Stephen Hawking.
Amy: Bernadette, on your wedding night you
S05E22 The Stag Convergence - 2012-04-26
The guys throw Howard a bachelor party, and some embarrassing details about his life get posted on the Internet.
Leonard: Again, I
S05E23 The Launch Acceleration - 2012-05-03
NASA cancel, and later reinstate Howard's mission into space, coinciding with his wedding. Leonard inadvertently jeopardizes his relationship with Penny.
Leonard: Howard and Bernadette. You are lucky enough to be best friends who love each other and that
S05E24 The Countdown Reflection - 2012-05-10
As Howard prepares for his mission into space, flashbacks show the recent events leading up to his and Bernadette's wedding.