Penny regrets her sleeping with Raj and has become very good friends with Leonard, Leonard breaks up with Priya, Amy pushes Sheldon in their relationship eventually becoming boyfriend and girlfriend, Penny and the other women become a clique of their own, Howard prepares for his wedding and going into space to the International Space Station and Leonard asks Penny out as they begin "Leonard and Penny 2.0".
S05E01 The Skank Reflex Analysis
Sep 22, 2011Penny worries that she's screwed things up permanently with her friends, while Sheldon takes command of the paintball team.
30m
S05E02 The Infestation Hypothesis
Sep 22, 2011Fight between Sheldon and Penny leaves Amy caught in the middle, while Leonard tries to spice up his long-distance relationship with Priya.
30m
S05E03 The Pulled Groin Extrapolation
Sep 29, 2011Leonard and Amy get to know each other better, while Howard and Bernadette spend the weekend with Mrs. Wolowitz.
30m
S05E04 The Wiggly Finger Catalyst
Oct 6, 2011Raj finally meets a girl he can communicate with.
30m
S05E05 The Russian Rocket Reaction
Oct 13, 2011Sheldon and Leonard get invited to a party at Wil Wheaton's house, and Howard gets an out-of-this-world opportunity.
30m
S05E06 The Rhinitis Revelation
Oct 20, 2011Sheldon competes with the gang for his mother's attention when she comes to visit.
30m
S05E07 The Good Guy Fluctuation
Oct 27, 2011Cute comic book artist puts Leonard and Priya's relationship to the test, while Sheldon tries to scare the guys for Halloween.
30m
S05E08 The Isolation Permutation
Nov 3, 2011Amy is crushed when Bernadette and Penny go shopping for wedding dresses without her.
30m
S05E09 The Ornithophobia Diffusion
Nov 10, 2011Leonard and Penny try hanging out alone, and Sheldon must overcome his fear of birds.
30m
S05E10 The Flaming Spittoon Acquisition
Nov 17, 2011Sheldon considers taking his relationship with Amy to the next level when Stuart from the comic book store asks her out on a date.
30m
S05E11 The Speckerman Recurrence
Dec 8, 2011Leonard must face his fears after being contacted by his high school tormentor.
30m
S05E12 The Shiny Trinket Maneuver
Jan 12, 2012Sheldon gets in trouble with Amy when he isn't impressed by her recent accomplishment, and Howard must come to grips with Bernadette's dislike of children.
30m
S05E13 The Recombination Hypothesis
Jan 19, 2012Everything might change when Leonard offers Penny a spur of the moment invitation to a romantic dinner for two.
30m
S05E14 The Beta Test Initiation
Jan 26, 2012Leonard and Penny experiment with dating, while Raj develops a peculiar relationship with his phone's virtual assistant.
30m
S05E15 The Friendship Contraction
Feb 2, 2012Sheldon's selfish demands force Leonard to reconsider their friendship. Meanwhile, Wolowitz tries to pick his astronaut nickname.
30m
S05E16 The Vacation Solution
Feb 9, 2012When Sheldon is forced to take his vacation, he goes to work with Amy in her neurobiology lab. Meanwhile, Bernadette wants Howard to sign a pre-nup.
30m
S05E17 The Rothman Disintegration
Feb 16, 2012When an office at the University opens up, Sheldon must compete for it with his archenemy, Kripke. Meanwhile, a gift from Amy makes Penny uncomfortable.
30m
S05E18 The Werewolf Transformation
Feb 23, 2012Sheldon's life is turned upside-down after his barber gets sick. Meanwhile, astronaut training causes Wolowitz to rethink his decision to go into space.
30m
S05E19 The Weekend Vortex
Mar 8, 2012Sheldon chooses to play video games with the guys rather than go with Amy to her aunt's birthday party.
30m
S05E20 The Transporter Malfunction
Mar 29, 2012Penny buys Leonard and Sheldon "Star Trek" collectibles as a thank-you, leading Sheldon to be haunted by Mr. Spock. Meanwhile, Raj decides he has met the "Future Mrs. Koothrappali" after his parents set him up on a date.
30m
S05E21 The Hawking Excitation
Apr 5, 2012When Wolowitz gets to work with Stephen Hawking, Sheldon is willing to do anything to meet his hero.
30m
S05E22 The Stag Convergence
Apr 26, 2012Bernadette reconsiders marrying Howard after learning about his sexual history.
30m
S05E23 The Launch Acceleration
May 3, 2012NASA reschedules Howard's mission, putting his and Bernadette's wedding plans in jeopardy. Meanwhile, Leonard says something surprising to Penny in the bedroom.
30m
S05E24 The Countdown Reflection
May 10, 2012When Howard and Bernadette decide they want to be married before his NASA launch, the gang rushes to put on a wedding.
30m
