Leonard: It should go back to Peter Jackson. He made the movies; it belongs to him.
Wolowitz: Fine, he can have it back -- as long as he promises to make me a hobbit in his next movie.
Raj: There are no Jewish hobbits.
Wolowitz: Clearly, you've never been to my house for dinner on Rosh Hashana.

Penny: Who's Adam West?
Sheldon: Who's Adam West!? Leonard, what do you talk about after the coitus?
Wolowitz: My guess is "four minutes, a new record!"

Wolowitz: Why do you have all of these unopened paychecks in your desk?
Sheldon: Because most of the things I'm planning to buy haven't been invented yet.

Wolowitz: Damn paper cut. Nothing worse than a paper cut!
Raj: Obviously you don't remember your circumcision.

I'd take Sheldon to Switzerland, absolutely. And I'd leave him there.

Wolowitz [about Sheldon]: How long's he been stuck?
Leonard: Intellectually about 30 hours, emotionally about 29 years.
Wolowitz: Have you tried rebooting him?
Leonard: No, I think it's a firmware problem.

I don't like to kiss and tell, but somebody made it to eighth base!

Wolowitz: I once dated a girl who believed she was abducted by aliens.
Leonard: And that didn't bother you?
Wolowitz: Au contraire; it meant she was gullible and open to a little probing.

Raj: Good news guys, I got the four hour special edition of Watchmen.
Leonard: Got it.
Wolowitz: Seen it.
Sheldon: Detailed analysis posted online.

It's not enough you get the prom queen, you have to get the head of the decorating committee, too?

Wolowitz: In romance, like show business, always leave them wanting more.
Leonard: What does that mean?
Penny: He struck out.

Katee: Thanks, Howard. Always nice to be part of your masturbatory fantasies.
Wolowitz: Come on, Katee. Don't make it sound so cheap.
Katee: I'm sorry. Fiddling with yourself in the bathtub is a real class act.

TBBT Quotes

Penny: Hey, Sheldon, did you change your Wi-Fi password again?
Sheldon: Yes, it's "Penny, get your own Wi-Fi." No spaces.

It's very simple. Scissors cuts paper, paper covers rock, rock crushes lizard, lizard poisons Spock, Spock smashes scissors, scissors decapitates lizard, lizard eats paper, paper disproves Spock, Spock vaporizes rock, and, as it always has, rock crushes scissors

Sheldon