Sheldon: We want to meet George Lucas and become his friends and play with him.

Sheldon: What if I told you that I was the voice of Yoda? A recording session I must attend.

Sheldon: And, for all the times you find me irritating, today you got to watch someone shoot me with a taser.
Leonard: That part was pretty good.
Sheldon: See.
Leonard: You did flop around a lot.
Sheldon: I'll take your word for it. I was too busy trying not to defecate.

Sheldon: I can see the ranch, Leonard! Oh, it's rustic, it's lovely. I'd take a picture, but people are chasing me. I'm going to make it! I'm going to make it! They have tasers, but they wouldn't dare use-- Aaaaaaah!

Sheldon: Now, we can play this one of two ways. You can say, "Trains! Tell me more," or, you can just look at me like that and I'll start.

Leonard: Okay, since we agree on the delivery system for the message, maybe we should talk about what the message could be.
Raj: Well, I think we should show what earthlings look like.
Howard: The plaque they sent up on the Pioneer probe had a drawing of a naked man and woman on it.
Sheldon: Yeah, I never cared for that. It's advertising to predator races just how soft and squishy *squeezes Leonard* we are.
Leonard: Squeeze yourself!
Sheldon: Oh, don't be offended. You know, of the four of us, you have the most veal-like consistency.

Sheldon: Just out of curiosity, why didn't you ask Leonard for advice about this?
Penny: Urgh, because I already know what he'll say. Wah, wah, wah. You shouldn't do it.
Sheldon: Ah, it's just like he's here.

Raj: So, I'd like to try a technique. When no one gets streamrolled. When you talk, instead of bringing up a new idea, respect what was just said by building on it.
Sheldon: Building on that, we should order dinner.
Leonard: How is that building on what he just said?
Howard: Building on what Sheldon said, I could go for Chinese.
Raj: Hang on. Building on what Leonard said, no one built on what I said.
Sheldon: Building on building on that, there's a new build your own pizza place on Colorado.
Leonard: Building on that, I'd like to remind you I'm lactose-intolerant.
Howard: I saw the menu. They have Soya cheese.
Sheldon: Ha! You didn't say building on. You're out.
Leonard: It's not Simon Says.
Raj: You're missing the point, Sheldon.
Sheldon: You're out and you're out. I win. Who wants pizza?

Sheldon: Greetings from Planet Earth. Just turn left at Alpha Centauri. You can't miss it.

Amy: Leonard, have you ever given a high school commencement speech before?
Leonard: No. It's pretty exciting.
Sheldon: Aren't you afraid of being blinded?
Leonard: How would I be blinded?
Sheldon: At the end of the ceremony, all the students throw those pointed hats in the air. It's all "Pomp and Circumstance" until someone loses an eye.

Howard: Okay, the WiFi extender is on, the camera's on, they're both on the same network. We should be getting an image.
Sheldon: All I see is a black screen, and my own reflection. I look sad.

Raj: I have to return the helicopter. My father-- What did you do?!
Sheldon: Don't worry. He went to MIT. He can solve any problem. As long as it doesn't originate in a Russian man's colon.

Howard: All right. All systems go. In five...
Boys: ...four, three, two, one.
*An electrical crackle is heard and smoke comes out of the drone*
Sheldon: That's what my train used to do.

Tech Support: Tech Support. Can I help you?
Sheldon: Yes, it's a robot uprising! Call the police!

Beverly Hofstadter: Mary, I'm curious. When did you first realize that your son had such a remarkable mind?
Sheldon: Ooh, good question. Everyone loves stories about Sheldon Cooper, boy genius.