Howard: I don't get how you can enjoy cricket. It makes no sense.
Raj: Did you just come here to complain?
Howard: Yeah. That's the sport of my people.

Penny: What are you lunatics doing?!
Amy: Sheldon had a breakthrough.
Sheldon: Actually, Amy and I had a breakthrough.
Penny: Oh, science? Shocking!
Leonard: You don't understand. This could be really big.
Sheldon: No, Penny's right. We have our whole lives to do science together.
Amy: Let's get married.
Penny: All right. It's go time! I am pumped!

Sheldon: Well, I suppose we could pick a different date.
Amy: Well, it took you nine months to choose that one. I'll pick a different husband first.

Ira Flatow: Hi, I'm Ira Flatow, and this is Science Friday. Joining me today is my guest physicist, Dr. Leonard Hofstadter, to talk about all of the exciting research they're doing at Cal Tech.
Leonard: Thank you for having me. Whoa (chuckles) Could never get used to hearing myself in headphones. Is that really how I sound?
Ira Flatow: (chuckles) It is. It is.
Leonard: (deep voice): That is good to know.

Leonard: Okay, just tell me what I can do.
Ms. Davis: I'm gonna need you to make a statement saying that you misspoke, and that you're confident the physics community is close to a major breakthrough.
Leonard: You want me to lie.
Ms. Davis: Look, Dr. Hofstadter, I'm counting on you. I think that you are the smartest physicist at this university.
Leonard: Really?
Ms. Davis: See? Lies. They're not that hard.

Bernadette: This wasn't supposed to happen. We were careful.
Penny: Yeah, I didn't even think you could get pregnant while you were breastfeeding.
Bernadette: Well, guess what? You can!

Georgie: Hey, uh, I got a question. Why aren't there tires on any of those Star Wars vehicles?
Mark Hamill: (chuckles) I'm sure some of them had tires.
Stuart: Actually, they don't. I mean, the HAVw A5 turbo tank has metal gripping wheels, but I wouldn't call them tires.
Denise: You are so hot.

Sheldon: I said some pretty unprofessional things about his work. I may have even used the "S" word.
Amy: Subpar?
Sheldon: I'm not proud of it, Amy, but I have a temper.

Georgie: Look, I mean, I always looked out for him at school. I drove him everywhere. I apologized to people when he was rude.
Leonard: Yeah. I've done all that. I've also removed all the red balloons from his Lucky Charms because they weren't "Irish enough".

Raj: When we gaze out at the immensities of space, we understand them because there are immensities within us as well. I'm Dr. Rajesh Koothrappali, and thank you for taking a walk with me ... through the stars.
Leonard: That pause gets longer every show.
Howard: I believe ... you're right.

Raj: So, yeah, Mr. Mark? When you were on the, uh, Wookiee home planet, how did you even understand what they were saying?
Mark Hamill: I don't remember ever being on a Wookiee home planet.
Stuart: Uh, actually, Luke was on the Wookiee home planet, Kashyyyk, in the Holiday Special when he helped Chewie get home to his wife.
Mark Hamill: Chewie had a wife?
Stuart: Her name's Malla.
Denise: Wow, that's impressive.
Stuart: Yeah.

Amy: That was Wil Wheaton. He's really excited about tomorrow.
Sheldon: As am I. If you'd have told me as a child that an actor from Star Trek would be officiating my wedding, I would've said, "Ooh, William Shatner?" And if you'd have said, "No, Wil Wheaton," I'd have said, "Well, did you even try William Shatner?" And if you'd have said, "Yes, but he costs too much money," I'd have said, "Ah, well, Wil Wheaton's good, too."

Penny: Auntie Penny's here. Shh. Let's get you changed. Your mommy and daddy say they trust me, but they're full of the same stuff your diaper is.

Sheldon: So, what do you think?
Amy: Well, I already told him that I loved it, but if you found it confusing or dangerous or, I don't know, three to four times too long, now is the time to share.

Howard: You know what? Forget the past. What do you say you and me build this rocket?
Sheldon: That sounds like it could be a real bonding experience for us.
Howard: Right?
Sheldon: Oh, I see. Oh, you think that's a positive.