Howard: You sure? Not even coffee? We have R2-Decaf. Maybe a nice Cafe au Leah.
Raj: And if you're not in the mood for coffee, I can always make you a Chai Tea-3PO.

Sheldon: I'm fine.
Leonard: Okay ... and yet he cried when they changed the Raisin Bran box.

Raj: Can I make you breakfast? Admiral Ackbar's Snack Bar is open for business!

Penny: I've just never known anyone that died. I had a pet pig when I was a kid. When he died we didn't have a funeral, we had a barbecue.

Penny: And this is also not the right time. Do not propose.
Leonard: What?!
Penny: I know that face. That's your proposed face.

Penny: Oh, I get it. Like C-3PO. ... What happened to me?

Sheldon: Why are you here?
Arthur: I don't know. I was hoping I was going to haunt my ex-wife.

Bernadette: I got into science because I was always the smallest kid in the school. I thought if I became a scientist I could invent a formula that made me taller.
Amy: That's cute.
Bernadette: I thought it was working for a while, but then I found out my brother was just lowering the pencil marks on the door frame.

Professor Proton: This is something interesting, boys and girls. After an owl eats, he spits up part of his meal, that he can't digest, in the form of a pellet. Isn't that a hoot?

Arthur: Is this the first time you've lost someone close to you?
Sheldon: Oh, no. I've already had to say goodbye to eleven Doctor Whos.
Arthur: Yeah, I've outlived a few of my doctors, too.

Bernadette: This is pretty cool. You don't see too many spherical cakes.
*The cake rolls off the table*
Amy: I wonder why that is.

Leonard: The funeral's on Sunday.
Sheldon: But that's Star Wars day.
Leonard: Yeah. Off all the things about this that are sad, that might not be number one.

Sheldon: Look at Arthur cracking up at a joke I made. I'll never hear that joke again.
Arthur: You never heard it that time.

Arthur: Just make sure you appreciate those who are still there for you.
Sheldon: But I do appreciate them.

Bernadette: Anyway, it'll be a nice surprise for the boys. And Howie doesn't think I take his interests seriously, so hopefully this will keep him fooled for a while.