Howard: Okay, here it is. Bernadette said you guys are all sick of me talking about my trip to space. Is that true?
Sheldon: Yes.
Raj: No.
Sheldon: We seem to have different approaches here. I was going for helpful honesty. I have no idea what you're doing.
Raj: It's called being nice.
Sheldon: Okay. If you think being nice will get him to shut up, I'll try it.

Howard: Sheldon, some day, if you get a car, I'm sure they'll give you another parking space.
Sheldon: I don't want another parking space. I want my parking space. It's perfect. It's a corner spot, cutting the risk of door-dings in half. It's a mere 28 steps from the building entrance. The nearby tree provides shade on hot days and is also home to a delightful squirrel. Which is fortuitous because most squirrels are real jerks.

Howard: My wife came with both fun bags and money bags.

Amy: Seriously, is that tape? Like, how are they staying up like that?

Sheldon: Did you also have a dog? Because I found what appears to be a battery-operated chew toy.
Penny: Party's over. Party's over.

Howard: She hid my XBOX like I'm a child. And my mom got me that for my birthday so if you don't give it back, I'm telling.

Sheldon: Well, that stinks. No wonder you got cancelled. Bye.

Sheldon: Steven Hawking's a genius and he talks like a robot. It's everything I ever wanted in a friend.

Sheldon: Fun? Mixing Dungeons and Dragons with Christmas is like making a sandwich of grape jelly, the best-tasting jelly, and petroleum jelly, the worst-tasting jelly.

Sheldon: What can I do for you ladies?
Amy: You have something we want.
Sheldon: Oh, dear. My mother warned me this is what happens to pretty boys in the big city.
Penny: No, we just want information.
Sheldon: Oh. I've got that spades. Ravage me.

Mrs. Wolowitz: Howard, help, my hand's stuck in the garbage disposal.
Howard: Let go of whatever piece of food you're holding.
Mrs. Wolowitz: Are you kidding? It's a perfectly good chicken leg.

Amy: And action.
Wil Wheaton: And cut! You realize I'm doing this for free, right?
Amy: Yes, and so far we're still not getting our money's worth.

Sheldon: Penny, all my life I have been uncomfortable with the sort of physical contact that comes easily to others: handshaking, hugging, prostate exams. But I'm working on it, you know? Just recently, I had to put VapoRub on Amy's chest. A year ago, that would have been unthinkable.

Sheldon: You know, I am very disappointed that I won't be able to celebrate Howard's accomplishment tonight.
Amy: Me, too. But we'll see him tomorrow.
Sheldon: Yes, it's just that in all the years I've known him, he's never had the opportunity to receive my admiration. I was excited to see the look on his face when it finally happened.

Leonard: Sheldon's nervous about me leaving. Just keep an eye on him while I'm gone.
Penny: Oh, I don't know. Remember what happened when I took care of your goldfish?
Leonard: Well, flush Sheldon down the toilet and get me a new one.