With Professor Rothman's retirement - or what could be considered him being forced out due to mental instability - there is a battle in the physics department between She ...

Much to Sheldon's chagrin, President Siebert orders him to take his mandatory vacation time immediately. Sheldon does whatever he can to pretend to take his vacation but ...

As Leonard is feeling sleep deprived because of Sheldon, Leonard is in no mood to have to drive Sheldon to the dentist's office as per the roommate agreement. As such, Le ...

Leonard and Penny have decided to start dating each other again, but Penny is worried that any little glitch in their second time around will stall or halt them getting b ...

After thinking about it long and hard, Leonard decides to ask Penny out on a real date again, which not only garners a shocked reaction from Penny, but the same from the ...

On Sheldon and Amy's scheduled monthly date night, Amy becomes obviously upset with Sheldon. Penny, who witnessed the incident, tells Sheldon that Amy's anger is due to h ...

Out of the blue, Leonard receives a message through his Facebook page from Jimmy Speckerman, a high school acquaintance who bullied him all throughout school. Jimmy wants ...

When Stuart meets Amy as she accompanies Sheldon to the comic book store, Stuart feels they had a moment. As such, Stuart wants to ask her out on a date. Not knowing what ...

A blue jay perched on his apartment window ledge is too much for ornithophobic Sheldon to handle. As no one - even the authorities (gasp) - seems to want to help him shoo ...

While Amy and the guys are eating lunch in the cafeteria, Howard receives a text message from Bernadette about how her wedding and bridesmaids dress shopping is going wit ...

Leonard is nonplussed when he is approached by a beautiful woman named Alice while they're both in the comic book store. He figures that her interest in him is purely on ...

Sheldon's mother, Mary Cooper, stops by for a visit before embarking on a Christian based cruise. Sheldon is excited about her visit if only to have his Mommy do Mommy th ...

Since they are in the comic book store when he stops in, Leonard and Sheldon are invited by Wil Wheaton to a party at his house. Leonard has every intention of going, whi ...

Especially with Howard and Bernadette's impending marriage, everyone, including Raj himself, is feeling sorry for Raj not having a girlfriend. The problem of Raj finding ...

After a group dinner at Leonard and Sheldon's apartment, Leonard and Amy are the unlikely pair left alone at the apartment as everyone else goes off for the evening. Desp ...

With Priya having moved back to India, she and Leonard decide to try having a long distance relationship, which includes Skyping each other on a regular basis. Howard sug ...

In the aftermath of Raj and Penny's night together from which Raj believes he's in love with her, everyone seems to be mad at Raj. Although he has no intention of getting ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...