Sheldon: Arthur Jeffries was a scientist. I'm sure he didn't care about stupid superstitions like funerals. If he were here, I think he'd say "Enjoy Star Wars day".
Leonard: He was eighty-four. He'd say "Where's my pudding?"

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

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.

Leonard: So, what did you think of your first funeral?
Penny: I don't want to be a jerk but it was kind of a bummer.

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

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: Amy, mourning the inevitable is a complete waste of time.
Amy: And watching a bunch of goofy space movies you've seen a hundred times isn't?
Sheldon: If we were in a physical relationship, you've just lost sex tonight.

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.

Penny: Thank you for being the emotional one in this relationship.
Leonard: I got your back

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: It's fantastic. This is the longest I've gone without running into a men's room in years.

Penny: You're a big cry baby. You start, I'll join in.
Leonard: I am not a cry baby.
Penny: Toy Story 3.
Leonard: The toys were holding hands in a furnace!

Amy: Did you watch Professor Proton when you were a kid?
Bernadette: No. My dad controlled the TV, so unless someone was a Texas Ranger, Jake or the Fat Man, we didn't see it.

Raj: Before you go, at least let me pack you some Attack of the Scones for the road.
Penny: Ohh, like Attack of the Clones. ... We are leaving right now!

Amy: Arthur passing away was harder on Sheldon than he's ready to admit. I'm really hoping this will cheer him up.
Bernadette: Me too. Although it might have been thoughtless of us to bake a Death Star cake.
Amy: No, it combines two of Sheldon's favorite things: chocolate chips and the ability to destroy a planet at the touch of a button.