Leonard: Hey, Penny. It's Leonard.
Penny: Hey, Leonard. How's the train ride?
Leonard: Delightful. Listen, I don't know what you're doing right now, but there are little bubbles forming on the corners of Sheldon's mouth.

Sheldon: All right, now, before you enter my bedroom unescorted, I need you to understand that this onetime grant of access does not create a permanent easement. ... Easement. It's a legal right of access. ... Good grief. What? No, don't put me on hold. Aw.

Leonard: He's calling to ask you a favor. You might be confused because he didn't use the words, Penny, Sheldon, please or favor.

Howard: Hi, I'm the small package good things come in.

Sheldon: Yes, I'm still here. Where am I going? I'm on a train. Now, what you'll be looking for is a small wooden box located between a Hoberman's sphere and a sample of quartz flecked with pyrite. Hoberman's Sphere. It's a collapsible icosidodecahedron. No, the thing with the time on it is my alarm clock.

Sheldon: So, I'm thinking, you won the Nobel Prize what, three years ago? So you must deal with a whole lot of what has Smoot done lately? My thought is we continue my research as a team, you know, Cooper-Smoot, alphabetical, and when we win the Nobel Prize, you'll be back on top.
George Smoot: With all due respect, Dr. Cooper, are you on crack?
Sheldon: Fine! Smoot-Cooper. Wow, what a diva.

Sheldon: Okay, step four. Do you see that small plastic case on my dresser?
Penny: Your dresser? Who is this?
Sheldon: It's Sheldon.
Penny: Oh, hey, Sheldon! How is San Francisco?
Sheldon: I'm not in San Francisco. I'm on a train. Were you even listening to me?
Penny: Uh, no, I was talking to my friend, but what's up?
Sheldon: What's up? I'll tell you whats up. I'm in a crisis situation, and I need you to marshal your powers of concentration, limited as they may be-

Howard: And did you know the word "pumpernickel" comes from the German words pumper and nickel, which loosely translates to fart goblin?

Raj: And that bright little star peeking her head out early today, that's Venus.
Summer Glau: That is so cool. You really know a lot about space.
Raj: Come on. When you were on TV in Firefly, you were actually in space.
Summer Glau: You're not one of those guys who really believe that, are you?
Raj: You mean one of the hopeless geeks? No. Those are crazy people. Howard, be a dear and get me another one of these. Now, him, he's one of those geeks.

Howard: Do you believe him? Normally around women, he has the personality of a boiled potato. Put one beer in him, and he's M. Night Charmalarmalon.
Leonard: Is that what he's drinking? It's not even real beer.
Howard: What?
Leonard: Look at it. Non-alcoholic beer.
Howard: What's going on?
Leonard: I don't know. Some sort of placebo effect, I guess.
Howard: Placebo, you say. Interesting.

Raj: Actually, in India, the names of constellations are different. Where you have the Big Dipper, we have the Big Curry Pot.
Summer Glau: You're making that up.
Raj: You got me. Now what are you going to do with me?

Sheldon: Leonard, let me tell you something. Personal robots cannot get here soon enough.

Penny: Hey Leonard, what's up with Dr Wackadoodle?

Howard: It's hot in here, it must be Summer.

Sheldon: She calls me moon-pie because I'm nummy-nummy and she could just eat me up.