Howard: When this is all blows over, remember that voice. It's kind of a turn-on.
Bernadette: It turns you on when I sound like Raj?

Professor Proton: Is the blond girl really your girlfriend?
Leonard: Yes, sir.
Professor Proton: You're the genius.

Professor Proton: Is, uh, is he dangerous?
Leonard: Actually he's a genius.
Sheldon: I am.
Professor Proton: That doesn't answer my question.

Amy: There are certain things that say to the world, I have a boyfriend and he's not made up. Matching cotumes, hickeys and sex tapes. Pick one.
Sheldon: What's a hickey?

Raj: Hey, I just found out that I have to be at the telescope lab all weekend. Any chance you and Bernadette could take care of my dog?
Howard: Why don't you put her in a kennel?
Raj: Why don't you put your mother in a home?
Howard: To be honest, she'd do better in the kennel.

Sheldon: Give me back my parking space.
Howard: You don't need a parking space. You don't have a car.
Sheldon: You don't need an Iron Man helmet. You're not Iron Man.

Wil Wheaton: Problem, first-time director?
Sheldon: Oh, none that I could see. I saw a man who loved flags almost as much as I do. I got goose bumps.
Amy: He was overacting on purpose.
Sheldon: Really? He reminded me of a young William Shatner.

Sheldon: Yes. I play the word quiver with a triple letter and a double word score for 72 points. That ought to let the air out of your tires, Hawking.

Raj: I have a thick accent. You don't know what I said.

Bernadette: Howie, you promised you'd move.
Howard: And I will.
Penny: Yeah, right.
Howard: I will. I'm obviously not going to live in my mother's house for the rest of my life. I'm not a child.
Penny: I've seen her burp you.
Howard: She did not burp me. She was patting me on the back, and I happened to burp.

Howard: My religion's kinda loosey-goosey. Basically, as long as you got your schmekel clipped and don't wear a cross, you're good.

Raj: I broke down and read Lucy's blog. In one of the entries, she said when we first met I struck her as a little feminine.
Howard: Just a little? That's great.

Sheldon: My friend, Wil Wheaton.
Wil Wheaton: Hi, Sheldon. Thanks for having me. I’m excited to be here.
Sheldon: So, Wil, what do you have for us first?
Wil Wheaton: Well, this is an exciting one. This is the flag of the United Federation of Planets. Now what's interesting about this flag-
Amy: Cut.
Wil Wheaton: What was wrong with that?
Amy: It's called Fun with Flags. They're not at half-mast, nobody died. Let's try and keep it upbeat.

Amy: Oh, you could turn his act into extract, and it would be for double points.
Sheldon: Amy. Why would you give me a word? Now, if I play extract it would be cheating.
Amy: Sorry.
Sheldon: Although, I could play the completely unrelated and better word extract. Ethical conundrum avoided. Thanks, brain.

Leonard: My point is, immortality is not only a possibility, it is real.
Raj: Only if you're this jellyfish which periodically reverts to a mass of undifferentiated protoplasm.
Sheldon: If I could keep my gMail account, I'd be okay with that.