Didn't work. This alcohol is defective.

Sheldon

Howard: Tell her I'm really sorry. And if she doesn't want to marry me, I get it. But what I really want her to know is the guy that she is really disgusted by is the guy that I'm disgusted by, too. But, that guy doesn't exist anymore; he's gone. And the reason is because of her. So, if this relationship is over, let her know that she made me a better man, and tell her thank you.
Penny: Oh my god, Howard! That's the most beautiful thing I've ever heard. And it came out of you.

Sheldon: New topic: women. Delightfully mysterious or bat-crap crazy?

You keep in mind that my sharply-worded comments on yelp.com recently took down a muffin store

Sheldon

Oh, no. They sent the wrong Spock. Live long and suck it, Zachary Quinto.

Sheldon

Leonard: Too casual?
Sheldon: For an audience with the queen, yes. For an evening of passing a bottle of fortified wine around a flaming trash can, you look great.

Wolowitz: Sheldon. You remember the first few weeks; we were looking for magnetic monopoles and not finding anything, and you were acting like an obnoxious, giant dictator?
Raj: I thought we were going to be gentle with him.
Wolowitz: That's why I added the "tator"

Sheldon: How could you not find him?
Leonard: Because he's hard to find. If he was easy to find, the books would be called "There's Waldo."

Leonard: Why would you buy peppermint schnapps?
Penny: Because I like peppermint, and it's fun to say schnapps!

Penny: I'm a vegetarian. Well, except for fish, and the occasional steak. I love steak!
Sheldon: Well, that's interesting. Leonard can't process corn

Raj: Let's go see if you fit in my man purse.
Bernadette: Heterosexual, my ass.

[Sheldon karate chops Leonard in the shoulder]
Leonard: Ow! Why did you do that?
Sheldon: To send a message: she's not for you!
Leonard: What?
Sheldon: Not for you!

TBBT Quotes

Oh, Bernadette, please play my clarinet.

Raj's poem

Sheldon: I'll have a diet Coke.
Penny: Can you please order a cocktail? I need to practice mixing drinks.
Sheldon: Fine... I'll have a virgin Cuba Libre.
Penny: That's... rum and Coke without the rum.
Sheldon: Yes, and would you make it diet?