Leonard: Hi. I'm Leonard. You are beautiful. You pop, sparkle and buzz electric. I'm going to pick you up at eight, show you a night you will never forget.
Raj: Where are we going?

Raj: We now have the address of the Top Model house.
Howard: God bless you, Google Street View—registered trademark.
Leonard: Okay, for the record, what you guys are doing is really creepy.
Wolowitz: You know what? If it's creepy to use the Internet, military satellites, and robot aircraft to find a house full of gorgeous young models so that I can drop in on them unexpectedly, then fine, I'm creepy.

Sheldon: Roommates agree that Friday nights shall be reserved for watching Joss Whedon's brilliant new series, "Firefly."
Leonard: Does that really need to be in the agreement?
Sheldon: Might as well settle it now; it's going to be on for years.

Sheldon: I propose we add "pants must be worn at all times in the time machine"
Leonard: Seconded.
Wolowitz: I was gonna put down a towel

Penny [at comic book store]: Everyone's staring at me!
Leonard: Don't worry, they're more scared of you than you are of them
Penny: Unlikely

Penny: You don't always have to go along with what the woman wants.
Leonard: Huh.
Penny: What?
Leonard: Nothing... just re-thinking my whole life

Leonard: Okay, is everyone clear on the plan?
Wolowitz: Yes. Koothrappali is going to wet himself, I'm going to throw up, Sheldon is going to run away, and you're going to die. Shall we synchronize our watches?

Leonard: Plus, I'm not sure it's a great idea to take Penny to where wine comes from. [chuckles] What? It's a joke. Oh, come on. We bust on each other. I wear dorky glasses, you might have a problem -- it's all for laughs.
Penny: That would really piss me off if I didn't have a buzz going on.

Wolowitz: So, how'd it go with Leslie?
Leonard: Oh, we tried kissing, but the earth didn't move... I mean any more than the 383 miles it was gonna move anyway

Penny: Dave is not smarter than you, he's an idiot.
Leonard: Really? Why would you say that?
Penny: Because a smart guy takes the nude photos of his wife off his cell phone before he tries to take nude photos of his girlfriend.
Leonard: He tried to take nude photos of you?
Penny: That's what you took from that?

Leonard: I'm sorry! I did, I crossed a line I didn't mean to.
Penny: Who says something like that right in the middle of sex?
Leonard: I don't know, it just came out! People say weird things during sex all the time.
Penny: Okay, well they sure as hell don't say that.
Leonard: It was heat of the moment.
Penny: No, the heat of the moment is "Oh yeah, just like that." Not "will you marry me?"
Leonard: I'm sorry, just-just give me another chance.
Penny: Why, so you can crawl under the covers and go, "Hey, baby, wanna go look for houses in neighborhoods with good schools?"

Okay, so Wolowitz and Stuart are paralyzed, Santa's dead, and I picked this over sex with my girlfriend.

TBBT Quotes

Sheldon: Why do people cry at weddings?
Mary: They're practicing for what's coming later.

Penny: Hey, Sheldon, did you change your Wi-Fi password again?
Sheldon: Yes, it's "Penny, get your own Wi-Fi." No spaces.