Leonard: That's right, you saw what you saw. That's how we roll in the Shire!

Leonard: I'm going to the movies with Penny. I don't want her to think I think it's a date.
Sheldon: Do you think it's a date?
Leonard: No, but she might think I think it's a date even though I don't.
Sheldon: Or you might think she thinks you think it's a date even though she doesn't.
Leonard: Are we over thinking this?
Sheldon: Not at all.

Sheldon: I've never once been invited to have cereal with Mrs. Vartabedian.
Leonard: She doesn't like you.

Penny: Do you ever imagine what that would be would be like, not being born?
Leonard: *Sheldon's knock* What do you think? *Sheldon's knock* What do you think? *Sheldon's knock* What do you think?

Leonard: Uhh, umm. I'm Leonard.
Penny: Really? You don't sound so sure.
Leonard: No, I am me.

Leonard: To Mrs. Wolowitz. A loving mother. To all of us. We'll miss you.

Penny: So what package are you thinking?
Leonard: This one comes with music and flowers. Oh, they even stream the whole thing live on the Internet.
Penny: Why would we want that?
Leonard: Because, there's a lot of gorgeous blondes out there who don't believe they can land a short, near-sighted scientist. Let's give them hope.

Leonard: Superman's gone. My stormtrooper's gone.
Sheldon: Your Klingon word-of-the-day calendar's gone.
Leonard: I'd say "damn it" in Klingon, but that wasn't until next month.
Sheldon: It's "khoo-vakh".
Leonard: Khoo-vakh!

(Leonard & Alice are kissing)
Leonard: Damn it, I can't. I can't do this.
Alice: Is it my tongue stud? 'Cause if that freaks you out, you're in for a real surprise later on.

Leonard: Twelve years after high school and I'm still at the nerd table.

Leonard: Hi. I'm Leonard. You are beautiful. You pop, sparkle and buzz e-lec-tric. I'm going to pick you up at eight, show you a night you will nev-er for-get.

Leonard: (To Raj) No, we don't want to watch Bridget Jones' Diary.

Tom: I'm sorry, dude, she didn't look anything like her picture.
Leonard: They never do.

Mary Cooper: You know, you two make a cute couple.
Leonard: No, no we're not, we're not a couple, we're single, two singles, like those individually wrapped slices of cheese that are friends.
Mary Cooper: Did I pluck a nerve there?
Howard: Oh yeah.

Leonard: What ya doin' there? Working on a new plan to catch the Road Runner?