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Penny's father, Wyatt, is in Pasadena for a visit. Leonard learns that Penny told her father that she and Leonard got back together again, as Leonard is the one and only of her boyfriends of who he has ever approved. Leonard agrees to go along with the ruse, but much against Penny's chagrin, he does so on his terms and not hers. But what would happen if Wyatt found out the truth? Sheldon, believing that Leonard and Penny have indeed gotten back together, decides to amend their roommate agreement to compensate for the Penny factor. Meanwhile, Raj has finally been allocated time to monitor a high powered telescope for twelve hours, and he invites Howard along, who in turn invites Bernadette. Raj is initially peeved at Bernadette's presence since he doesn't feel like he can drink (to be able to speak to her) and monitor the telescope at the same time. Raj makes the decision to consume alcohol, and his arc of drunkenness over the course of the evening ends with a close encounter with ... Written by Huggo
All Episodes - S04
EPS01
It's been four months since Sheldon met neuro-biologist Amy Farrah Fowler, who Sheldon believes is his intellectual equal as well as his emotional female equivalent. Alth ...
EPS02
After Sheldon scientifically calculates his life expectancy, he is dismayed to learn that he will be a few years short of the time when he will be able to transfer his co ...
EPS03
Despite not considering her his girlfriend and visa versa, Sheldon and Amy are spending a lot of time together. This situation irks the gang, but especially Leonard as Sh ...
EPS04
Howard is still uncomfortable in even seeing Bernadette, which is obvious when he spots her at work at the Cheesecake Factory. But when Bernadette enters his dreams inste ...
EPS05
With Amy in Sheldon's life (despite they still not being boyfriend/girlfriend), Bernadette in Howard's life, and even Raj now having a girlfriend (she being deaf so it do ...
EPS06
Raj's sister, Priya, a corporate lawyer, has a 24 hour layover in Los Angeles on her way to Toronto on a work trip. When the guys met her the first and only time five yea ...
EPS07
Howard has been chosen to work on the Defense Department's Laser Equip Surveillance Satellite project. He needs security clearance to work on the project which means the ...
EPS08
Leonard, Sheldon, Howard, Raj and Amy are planning to go a see a special screening of Raiders of the Lost Ark (1981) with 21-seconds of previously unseen footage which, f ...
EPS09
Penny's father, Wyatt, is in Pasadena for a visit. Leonard learns that Penny told her father that she and Leonard got back together again, as Leonard is the one and only ...
EPS10
Amy experiences strange symptoms, which she believes are signs of a flu. They include an elevated heart rate, sweaty palms, dry mouth, and localized vascular throbbing. A ...
EPS11
Penny starts dating Zack again. Used to being the target of bullying, Leonard, Sheldon, Howard and Raj instead bully Zack through their implications to him that he's stup ...
EPS12
Leonard comes up with an idea to develop a smart phone app that would use handwriting recognition software to help in solving their differential equations problems. Altho ...
EPS13
Penny initially declines an invitation from Amy Farrah Fowler, who considers Penny her best friend, to accompany her, Sheldon, Leonard, Howard, Raj and Bernadette to a we ...
EPS14
Raj laments the fact of his single status. An admission by Bernadette totally preoccupies Raj's thoughts in his fragile state. Meanwhile, Sheldon has just conducted a gue ...
EPS15
The university's President Siebert orders the guys to attend a fundraising party. Leonard, Howard and Raj are more than happy to go for the free food and drinks and the p ...
EPS16
Bernadette and Howard discuss where their relationship is heading when Howard once again can't stay the night since he has to look after his mother. When Bernadette broac ...
EPS17
It's Thursday night, which in Sheldon's world means that the guys are coming over for pizza. However, Leonard informs him that he's going over to Raj's to hang out with P ...
EPS18
Priya and Leonard's relationship has gotten to a serious stage where Leonard is wearing the clothes that she picks out for him and is trying to wear contact lenses on her ...
EPS19
Sheldon is totally distraught - even to the point of calling in the police and trying to call in the FBI - after someone has hacked into his World of Warcraft (2004) acco ...
EPS20
Starting with Penny to Amy, a rumor quickly spreads amongst Leonard, Sheldon, Raj and Priya that Bernadette is planning on breaking up with Howard. This rumor is especial ...
EPS21
When Sheldon formally charges Leonard with breaching the roommate agreement by taking a shower with Priya in the apartment bathroom when Sheldon had a call of nature (con ...
EPS22
Priya and Leonard ask Howard and Bernadette to join them for a couples only dinner at the Koothrappalis' apartment. Amy sees the invitation as Priya's way of conquering a ...
EPS23
Howard and Bernadette have started planning their wedding, but they have failed either to tell Bernadette's parents or Mrs. Wolowitz that they are even engaged. To ingrat ...
EPS24
Bernadette has just announced that her dissertation has been accepted, meaning that she will soon get her Ph.D. On top of that, she has received a lucrative job offer wit ...