Amy: I guess we'll have to make a new video together as a couple.
Sheldon: Good idea. And as you've had such a rough day, I'm gonna let you throw the pie in Leonard's face.

Amy: Think about it. If we had a family there, our kids would be martians.
Sheldon: They would, wouldn't they? We could give them cool martian names. We could teach them about martian history, like who planted those flags or where'd that copy of Mars Attacks come from.

Amy: We could also be the first people to procreate on Mars.
Sheldon: You just can't keep it in your space pants, can you?

Amy: I suppose being the first people on a new planet would be incredibly exciting.
Sheldon: I know. We could be the first to plant a flag on Mars.
We could be the first to watch Mars Attacks on Mars.
We could be the first to say "Good lord, what on Mars are you talking about?"

Raj: Thank you for forgiving me.
Emily: It's okay. At some point we were bound to have our first fight.
Raj: Well, it almost happened when you called my Apple Pie crust doughy. But the truth is, you were right and I was just angry at myself.

Leonard: It seems a shame to throw it away.
Penny: Yeah. We could give it to Sheldon and tell him William Shatner painted it.
Leonard: God, I love you. I love you so much.

Leonard: I mean I was on fire. I was in the zone like an athlete.
Penny: Sweetie, I beat you at this, too.

Bernadette: She sounds really mad.
Howard: We should hang up.
Bernadette: Yeah, we should.
Howard: But we're not going to, are we?
Bernadette: Not a chance.
Howard: What happened to snooping is wrong?
Bernadette: Eh, we're already going to jail for tax fraud, who cares.

Amy: What I want is for us to be planning our future together.
Sheldon: And in that future, are we on the same planet? Because I've seen people make the long distance thing work.
Amy: We're on the same planet!

Amy: Are you asking me to go to Mars with you?
Sheldon: I am. If I'm going to a barren, lifeless environment, where the chances of survival are slim to none, I want you there with me.

Leonard: Please go to Mars.

Howard: I think you broke the dowels. You're not gonna have time to glue it back on. You'll have to nail it.
Raj: With what?
Howard: Does she have any pillows or wine glasses?
Raj: She does.
Howard: Great. Neither of those. Try a hammer!
Raj: Did that feel good? You feel like a big man now?

Sheldon: During the seven month space flight, I can keep up morale with my wacky sense of humor. Hey, Leonard, is there any peanut brittle left in that can?
Leonard: You mean this weirdly suspicious one?
Sheldon: Yes. Open it and check.
Leonard: I don't get it. There's actually peanut brittle in-
*Sheldon throws a pie at Leonard*

Sheldon: Being in close quarters, cleanliness is important. My hygiene is impeccable. In fact, animals don't trust me because I smell like nothing. Literally, nothing.

Sheldon: I'm exceedingly smart. I graduated college at fourteen. While my brother was getting an STD, I was getting a Ph.D. Penicillin can't take this away.