Sheldon: You do understand that our efforts here will in no way increase the odds of you having sexual congress with this woman?
Leonard: Men do things for woman without expecting sex.
Sheldon: Those would be men who just had sex

Leonard: I guess we'll just bring it up ourselves.
Sheldon: I hardly think so.
Leonard: Why not?
Sheldon: Well, we don't have a dolly, or lifting belts, or any measurable upper-body strength.
Leonard: We don't need strength. We're physicists. We are the intellectual descendants of Archimedes. Give me a fulcrum and a lever, and I can move the Earth. (Trying to move the box) It's just a matter of... I don't have this. I don't have this. I don't have...
Sheldon: Archimedes would be so proud

Leonard: If you don't have any other plans, do you want to join us for Thai food and a Superman movie marathon?
Penny: A marathon? Wow, how many Superman movies are there?
Sheldon: You're kidding, right?

Excuse me, explain to me an organizational system where a tray of flatware on a couch is valid? Now, I'm just inferring that this is a couch, because the evidence suggests that the coffee table is having a tiny garage sale

Penny: So, what do you guys do around here?
Sheldon: Well, today we tried masturbating for money

[on their way to pick up Penny's TV from her ex]
Sheldon: And why can't she get her own TV?
Leonard: Come on, you know how it is with break-ups.
Sheldon: No, I don't and neither do you.
Leonard: But I -- I broke up with Joyce Kim.
Sheldon: You did not break-up with Joyce Kim, she defected to North Korea.
Leonard: To mend her broken heart

Penny: And on top of everything else, I'm all gross from moving. My stupid shower doesn't even work.
Leonard: Our shower works.
Penny: Really? Would it be totally weird if I used it?
Sheldon: Yes.
Leonard: No!
Sheldon: No?
Leonard: No.
Sheldon: No

Leonard: Sheldon, I am so sorry I dragged you through this.
Sheldon: It's ok. It wasn't my first pantsing, and it won't be my last.
Leonard: But you were right about my motives. I was hoping to establish a relationship with Penny that might have someday led to sex.
Sheldon: Well, you got me out of my pants.

Penny: I'm a vegetarian. Well, except for fish, and the occasional steak. I love steak!
Sheldon: Well, that's interesting. Leonard can't process corn

Sheldon: Are you still mad about the sperm bank?
Leonard: No!
Sheldon: Do you want to hear an interesting thing about stairs?
Leonard: Not really.
Sheldon: If the height of a single step is off by as little as two millimeters most people will trip.
Leonard: I don't care—two millimeters?! That doesn't seem right.
Sheldon: No, it's true! I did a series of experiments when I was twelve; my father broke his clavicle.

Leonard [referring to him and Penny]: Our babies would be smart and beautiful.
Sheldon: Not to mention imaginary

[at the high-IQ sperm bank discussing donating...]
Sheldon: What if she ends up with a toddler who doesn't know if he should use an integral or a differential to solve for the area under a curve?
Leonard: I'm sure she'll still love him.
Sheldon: I wouldn't

TBBT Quotes

Oh, Bernadette, please play my clarinet.

Raj's poem

Sheldon: I'll have a diet Coke.
Penny: Can you please order a cocktail? I need to practice mixing drinks.
Sheldon: Fine... I'll have a virgin Cuba Libre.
Penny: That's... rum and Coke without the rum.
Sheldon: Yes, and would you make it diet?