Leonard: I get that you feel bad about all the attention, but still what you did is amazing. We're really proud of you.
Amy: I'm not.
Sheldon: You're not?
Amy: Sheldon, I've been thinking about it and you're right. You don't deserve any credit. All you did was misread some numbers on a table. A very easy table, too. Honestly, I'm embarrassed for you.
Sheldon: That's the most romantic thing I've ever heard.
Penny: Damn it, everyone's better at this than me.
Sheldon: Congratulations, Dr. Fowler. You just made the fort.

Sheldon: I hate to pile on the bad news, but I just got a raise.

Raj: Penny, if you truly want to be romantic it has to come from you.
Penny: I get that, but why is this so hard?
Raj: You've probably never had to do this before because you're young and beautiful, and men have always thrown themselves at you.
Penny: Yeah, I'm trying to be sad about that. I can't.

Sheldon: This is the magic marker I was using when I made the discovery.
Amy: I don't think the Smithsonian is gonna want your marker.
Sheldon: And that's why you're not on my list for the tree fort.

Leonard: People get things they don't deserve all the time. Like me with you.

Sheldon: I've got to find a way to stop this thing.
Leonard: Buddy, I don't think you can. Once it's out there, it's out there. This thing is like the science equivalent of a sex tape.
Sheldon: Frankly, I'd prefer a sex tape.
Leonard: You don't know what a sex tape is, do you?
Sheldon: No.

Sheldon: Oh stop it. I don't need to take this admiration from the likes of you people.

Sheldon: Don't worry. I will remain the same down to earth, humble Joe I've always been.
Leonard: Good to know.
Sheldon: Now give me that cookie, I discovered an element.

Raj: As I'm sure you're aware the quickest way to a man's heart is through his -
Penny: Pants. But Leonard said sex doesn't count.
Raj: You poor thing. You have one arrow in your quiver and you just can't use it.

Penny: I don't know if I wanna cook for him. He's kind of a picky eater. "It's too salty. It's too dry. It's too burnt and frozen at the same time."

Raj: Well, I've always had this fantasy that involves dancing. The sexual chemistry between my partner and me. But boy oh boy, does my father not approve until he sees us in the big dance competition.
Penny: Okay, that's just the plot for "Dirty Dancing".

Penny: What else would you love? Other than being lifted over Patrick Swayze's head.
Raj: Oh, you could stand outside with a boombox in the air.
Penny: That's from "Say Anything".
Raj: Look, I'm a lonely guy. I watch a lot of movies.

Leonard: Besides, can you even name one romantic thing you've done for me?
Penny: I can name tons.
Leonard: And sex doesn't count.
Penny: Oh.

Howard: So I'm almost done writing the song for Bernadette. Are you cool playing the cello?
Leonard: If by cool you mean willing to, yes. If by cool you mean cool, clearly you've never seen me play the cello.

Howard: (To Raj) Will you play the ukelele?
Raj: Sure, I'd be happy to shred it on my axe.
Howard: Or you could just play your tiny, ridiculous guitar.