Seasons & episodes
S5 · E7The Good Guy Fluctuation 7.5 / 10 · 1 published rating 2011-10-27 · 20 min
A cute comic book artist puts Leonard and Priya’s relationship to the test, while Sheldon tries to scare the guys for Halloween.
S5 · E8The Isolation Permutation 7.4 / 10 · 1 published rating 2011-11-03 · 21 min
Amy becomes heartbroken when she discovers that Penny and Bernadette went wedding dress shopping without her.
S5 · E9The Ornithophobia Diffusion 7.3 / 10 · 1 published rating 2011-11-10 · 21 min
Leonard and Penny try hanging out as friends on a 'non-date', but end up purposely ruining each others chances with perspective dates. Meanwhile, Sheldon enlists the help of Bernadette and Amy to overcome his fear of birds.
S5 · E10The Flaming Spittoon Acquisition 7.6 / 10 · 1 published rating 2011-11-17 · 21 min
When Stuart asks Amy out on a date, Sheldon must confront his feelings and consider where his relationship with Amy is going.
S5 · E11The Speckerman Recurrence 7.4 / 10 · 1 published rating 2011-12-08 · 20 min
Leonard must face his fears after being contacted by his high school tormentor.
S5 · E12The Shiny Trinket Maneuver 7.7 / 10 · 1 published rating 2012-01-12 · 21 min
Sheldon 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.
S5 · E13The Recombination Hypothesis 7.8 / 10 · 1 published rating 2012-01-19 · 21 min
Leonard, who broke up with Priya, asks Penny out to a spur-of the-moment romantic dinner for two, and the duo contemplates on their relationship.
S5 · E14The Beta Test Initiation 8.2 / 10 · 1 published rating 2012-01-26 · 20 min
Leonard and Penny deal with the idea of starting a relationship again and Raj finally finds a "woman" he can talk to without being drunk, in the form of Siri on his new phone. Meanwhile, Sheldon decides to start a YouTube series entitled "Sheldon Cooper presents Fun with Flags" with the help of Amy.
S5 · E15The Friendship Contraction 7.9 / 10 · 1 published rating 2012-02-02 · 20 min
Sheldon's selfish demands force Leonard to reconsider their friendship. Meanwhile, Wolowitz tries to pick his astronaut nickname.
S5 · E16The Vacation Solution 7.7 / 10 · 1 published rating 2012-02-09 · 21 min
When Sheldon is forced to take his vacation, he goes to work with Amy in her neurobiology lab.
S5 · E17The Rothman Disintegration 8.0 / 10 · 1 published rating 2012-02-16 · 21 min
Sheldon battles Kripke for a coveted office at the university. Penny receives a very unusual gift from Amy.
S5 · E18The Werewolf Transformation 7.3 / 10 · 1 published rating 2012-02-23 · 21 min
Sheldon becomes agitated when his regular barber is out sick. Astronaut training causes Howard to reconsider wanting to go into space. Penny beats Leonard in chess, the first time she plays.
S5 · E19The Weekend Vortex 8.5 / 10 · 1 published rating 2012-03-08 · 20 min
Sheldon must choose between joining Amy at her aunt's birthday party or playing videogames all weekend with the guys.
S5 · E20The Transporter Malfunction 8.0 / 10 · 1 published rating 2012-03-29 · 21 min
Penny 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.
S5 · E21The Hawking Excitation 8.0 / 10 · 1 published rating 2012-04-05 · 19 min
When Wolowitz gets to work with Stephen Hawking, Sheldon is willing to do anything to meet his hero.
S5 · E22The Stag Convergence 8.8 / 10 · 1 published rating 2012-04-26 · 21 min
After the guys throw Howard a bachelor party, Bernadette reconsiders marrying him after learning about his sexual history.
S5 · E23The Launch Acceleration 7.6 / 10 · 1 published rating 2012-05-03 · 21 min
When NASA moves up Howard's mission, he must face his fears and Bernadette's dad, thus putting the wedding plans in jeopardy. Meanwhile, Leonard says something surprising to Penny in the bedroom.
S5 · E24The Countdown Reflection 7.9 / 10 · 1 published rating 2012-05-10 · 20 min
The fifth season ends with Howard and Bernadette deciding to get married before his NASA mission, causing the gang to scurry into overdrive in an effort to stage the wedding. NASA astronaut Mike Massimino has a cameo as himself.
S6 · E1The Date Night Variable 8.2 / 10 · 1 published rating 2012-09-27 · 21 min
With his friends on dates, Raj must face his loneliness. Also, Wolowitz is caught in an argument between Bernadette and his mom, even while he’s in space.
S6 · E2The Decoupling Fluctuation 7.2 / 10 · 1 published rating 2012-10-04 · 21 min
When Sheldon learns that Penny is thinking about breaking up with Leonard, he tries to intervene. Meanwhile, in space, the other astronauts pick on Howard.
S6 · E3The Higgs Boson Observation 8.0 / 10 · 1 published rating 2012-10-11 · 19 min
Amy feels threatened when Sheldon hires a young female assistant, and the pressure of being in space takes its toll on Wolowitz.
S6 · E4The Re-Entry Minimization 7.4 / 10 · 1 published rating 2012-10-18 · 21 min
When Wolowitz returns from space, he doesn’t get the hero’s welcome he expected. Meanwhile, Game Night turns into a battle of the sexes.
S6 · E5The Holographic Excitation 7.5 / 10 · 1 published rating 2012-10-25 · 21 min
The gang celebrates Halloween at Stuart’s comic book store. Meanwhile, Leonard seduces Penny with science.
S6 · E6The Extract Obliteration 7.6 / 10 · 1 published rating 2012-11-01 · 21 min
Sheldon’s relationship with Stephen Hawking is threatened over a game of “Words with Friends,” and Penny secretly enrolls in a class at the local college.