Let's have a toast. To Mrs. Wolowitz. A loving mother ... to all of us. We'll miss you.

Leonard: Hi. I'm Leonard. You are beautiful. You pop, sparkle and buzz electric. I'm going to pick you up at eight, show you a night you will never forget.
Raj: Where are we going?

Leonard: You know, Penny, we make such a good team, maybe we could enter a couple of Halo tournaments sometime.
Penny: Or we could just have a life.

Leonard: I'm not a crybaby.
Penny: Toy Story 3?
Leonard: They were holding hands in a furnace!

Raj: Did you forget what Penny did to you? It took two years and defiling my sister to turn that frown upside down.
Leonard: I didn't defile your sister, we had a relationship.
Raj:I heard you called her Brown Sugar. In my book, that's defilement.

Leonard: Maybe it's a shipping problem.
Howard: What?
Leonard: Maybe Wesley Snipes and Toucan Sam just got action figures that look like you guys.

Way to hit'em with both barrels.

Penny: You mean, like a date?
Leonard: Not like a date, a date.

Here's Mr. T's head on Spock's body. I pity the fool that is illogical.

Leonard: Can we please have some privacy?
Sheldon: No. I'm as much a part of this relationship as you two. And I think it's high time we put all our cards on the table. For example, where is this going? Are you two ever getting married? And if so, where will we all live? Have you thought about that?

Leonard: So, is that it? Are we engaged?
Penny: Yeah, I think so.
Leonard: All right.

Leonard: You have a TV in your room. Why don't you just have breakfast in bed?
Sheldon: Because I am neither an invalid nor a woman celebrating Mother's Day

TBBT Quotes

Penny, there's only one cookie with something in the middle that solves life's problems, and that's an Oreo. Or a Nutter Butter, if you're in a pinch.

Sheldon

Penny: Here's a question-- as an alien pretending to be human, are you planning to engage in any post-prom mating rituals with Amy?
Sheldon: There are post-prom mating rituals?
Penny: Not always. Unless your date drives a van with an air mattress, then always.
Sheldon: Well, if it's part of the prom experience, then I'm open to it.
Penny: You're kidding.
Sheldon: I may be an alien, but I have urges.If Amy wants to copulate by firing her eggs into space, well, then, I will happily catch them with the reproductive sac on my upper flermin. I'm not the best at reading facial cues, but I can see that you're a little turned on.