Amy: My mom thinks that Sheldon is the reason I don't spend a lot of time with her.
Penny: Well, why would she think that?
Amy: Because I told her. You need a cup of coffee? Wake up!

Sheldon: You're awfully quiet.
Leonard: Sorry.
Sheldon: No, I like it.
Leonard: Got a lot on my mind.
Sheldon: Would you like to talk about it?
Leonard: Not really.
Sheldon: Grape Nuts for breakfast, quiet car ride, things are really breaking my way today.

Tam: Sheldon, come here.
Sheldon: Bazinga!

Amy: It's weird. I don't really feel different, but I guess our lives will never be the same.
Sheldon: Oh, I don't know. We're going to work like always. I still put my pants on both legs at a time.
Amy: One day that's gonna end very badly.

Leonard: How was your flight?
Beverly Hofstadter: There were some parents with a baby. A lot of crying.
Leonard: Well, babies do that.
Beverly Hofstadter: No, it was the parents. It seems they couldn't handle some constructive criticism.

Penny: No, it's not that.
Bernadette: Then why?
Penny: Honestly, I don't know if I'm up to it. You know, the last project I managed was my high school yearbook.
Bernadette: And?
Penny: And that was the year we didn't have one. - And? And that was the year we didn't have one. Apparently, the printers won't make them without getting paid.
Bernadette: What happened to the money?
Penny: Uh, if I didn't know then, I'm not going to magically know now.

Leonard: What is up with you two?
Stuart: Well, it's kind of hard to explain. Uh, you know when things are going great, but you worry that any minute you might screw everything up?
Penny: No.
Leonard: Yes. If you really like her, you can't let fear get in the way. You have to move forward.
Stuart: And at a certain point, the fear of losing her goes away?
Leonard: I will let you know.

Sheldon: I suppose you're wondering why I put you through all this.
Leonard: You mean the last two minutes or the last 20 years?

Bernadette: My dad and I watched you win back-to-back championships.
Kareem Abdul-Jabbar: And I watched you sniff Joe's hair when he wasn't looking.

Sheldon: What? No knock? What's the fracas?

Amy: Is something bothering you?
Sheldon: Howard dressed up as me and imitated me, and everyone laughed.
Amy: Oh. Well, that must have felt terrible.
Sheldon: It did. I never realized my friends viewed me as an object of ridicule.
Amy: Oh, I don't think that's true.
Sheldon: They laughed, Amy. In a derisive way. Not in the instructive way I laugh at them when they're being stupid.

Amy: Who's Tam?
Sheldon: He was my best friend in the whole world growing up.
Amy: Really? Why have I never heard you mention him before?
Sheldon: Oh, of course I have. I'm sure I've mentioned him, like, five times this week.
Amy: I don't think you have.
Sheldon: Tam! Tam! Tam! Tam! Tam! There, it's only Thursday.
Amy: I didn't just drink the crazy milk, I bought the crazy cow.

Penny: Tam, look. Sheldon's hugging me.
Tam: It's a Saturnalia miracle.

Amy: You're up early.
Sheldon: Huh? Yes. I wanted to get a jump on planning a day of fun for you.
Amy: Oh, that's sweet. What are we doing?
Sheldon: Oh, no. Just you. I have other plans. Now, would you prefer to see The Grinch in 2-D or 3-D?
Amy: I don't want to see it at all.
Sheldon: Well, let's go 2-D. No sense in spending extra money.

Howard: Wow. I wonder what that guy could've done to make Sheldon not talk to him for 20 years.
Leonard: I wonder if it'd work a second time.