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?

Leonard: It comes with paints and it's kind of creative and artistic.
Penny: Okay, did you go to the dirty store, or Michaels?

Leonard: What, to you, is a large crowd?
Sheldon: Any group big enough to trample me to death. General rule of thumb is 36 adults or 70 children.

You have to propose to me.

Penny: Just you wait and see. I'm gonna romance your freakin' ass off.
Leonard: That's beautiful. Is that Shakespeare?

Penny: Oh, I don't know. Remember what happened when I took care of your goldfish?
Leonard: Well, flush Sheldon down the toilet and get me a new one.

Wolowitz: I love watching Raj and Sheldon try to work together.
Leonard: Yeah, it's like if Alien and Predator decided to go partners in a Jamba Juice.

It had weaponized fruit and a puppet. What more do you want?

Leonard: You always knew that someday someone would come along who was younger and smarter.
Sheldon: Yes, but I assumed I would have been dead hundreds of years and that there'd be an asterisk next to his name because he'd be a cyborg

Leonard: I know what you are doing. You don't want me going on this research trip because you're afraid to be alone.
Sheldon: I'm not afraid to be alone. On the sea, it would be terrifying. Because of all the drowning.

Wolowitz: Sheldon knows football?
Leonard: Apparently.
Wolowitz: I mean, Quidditch, sure. But football?

Leonard: It'd actually be nice to not hear Sheldon complain about my cooking all day.
Sheldon: Yo ... uh, excuse me, but every year you prepare a terrible meal and every year I criticize it. Do our traditions mean nothing to you?

TBBT Quotes

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

Penny, there's only one cookie with something in the middle that solves life's problems, and that's an Oreo. Or a Nutter Butter, if you're in a pinch.

Sheldon