Howard: Anyway, this is Leonard and Sheldon. The three of us came up with the guidance system.
Leonard: Hi.
Sheldon: Hello.
Howard: And this is my friend, Raj.
Raj: Oh, I'm not on the patent. I'm just here because there's a bumblebee in my office.
Leonard: I saw it. It's big.

Leonard: So, what are you guys gonna do today?
Amy: Well, Sheldon was supposed to go to this party with me this afternoon, but I don't think that's happening.
Sheldon: Oh, that was never happening.

The Flash: Here, it's on the house.
Sheldon: The first one's free? Flash, how do you stay in business?
The Flash: You want to know my secret? I bought stock in Marvel.

Sheldon: Are you okay? Oh, I'm fantastic, never been better. I had my first energy drink and I feel great. Hey, you guys want to wrestle? We can do arm, thumb, mud, sumo. Nah, we're not fat enough, or wearing diapers.

Sheldon: Yeah, but what happens when we each get a peek behind the curtain? I mean, she's never even seen me unshaven.
Leonard: You just shaved yesterday. You're good for three months.

Penny: Sheldon, she wanted to share a toothbrush holder with you, and now you're at an ice cream parlor trying to pick up women!

Sheldon: Do you know what else I love about you?
Stuart: Hmm?
Sheldon: Your handwriting is impeccable!
Stuart: Thank you for noticing!
Sheldon: No, I mean it. I mean it. It's like you have the soul of a label maker.

Howard: Are we there yet?!
Bernadette: Soon.
Howard: Why is it taking so long?!
Raj: Howard, Howard, look at the DVD screen. I put on Batman: The Animated Series. Your favorite!
Howard: I'm in too much pain (Batman music starts playing) to watch cartoo-- Oh! This is a good one.
Raj: I've been babysitting him way longer than you have.

Leonard: And that is how a short asthmatic scientist landed a stone-cold fox.

Amy: Well, thank you, Sheldon. This is a fun surprise.
Sheldon: Oh, well, the real surprise is how surprised you are that I'm great at surprises.
Amy: Well, that's not a surprise at all. I mean, if I knew you were good at surprises, I would have expected the surprise, and therefore not have been surprised. But as it is, I didn't know, and therefore my surprise should be unsurprising.
Sheldon: Don't get me all randy. Guests are on the way.

Leonard: She took my Where's Waldo.
Sheldon: Well, no, no, he's over there.
Leonard: Oh, yeah, there he is.

Howard: I'm serious, JPL's actually developing a robot arm that could grab an asteroid before it hits us.
Leonard: So their plan for saving the Earth from Armageddon is hoping a bunch of scientists can catch a ball?

Leonard: You're awful quiet, everything okay?
Sheldon: I'm concerned about Amy. She's acting a bit odd lately.
Howard: Oh, well, j-just out of curiosity, what registers as odd to you?

Amy: Ever since I met Penny, I've been envious of her looks.
Penny: Aw, thank you.
Amy: That's why I was so happy when you cut your hair off.
Penny: What?!
Amy: You know what I mean. You were still hot, but more like a "why'd that hot girl cut off all her hair?" hot.
Penny: You liked my short hair, right?
Leonard: (unconvincingly) Yeah I loved it. Love you, love the hair, would love to change the subject.

Leonard: Damn. I burped so hard, I died in my game.