Oh, it's okay. I have no morals and I'm desperately lonely. I'll be the other man if you want a little something-something on the side.

I'm hoping to put his love of repetition to good use someday.

Amy

I'm not crazy; my mother had me tested.

Sheldon

Penny: I cannot believe we were missing that jerk.
Sheldon: You were.

Penny, you're an expert on trading sexual favors for material gain, walk him through this.

Sheldon

I hope you're right. Because a grown man living with his brother and his brother's wife is weird.

Sheldon

Raj: Good news guys, I got the four hour special edition of Watchmen.
Leonard: Got it.
Wolowitz: Seen it.
Sheldon: Detailed analysis posted online.

I believe I'll gain acceptance by arbitrarily siding with your friends from time to time.

Amy

Bernadette: Gosh, Amy. I'm sensing a little hostility. Is it maybe because like Sheldon's work, your sex life is also theoretical?
Penny: Damn.
Amy: Well, at least, when we do make love, Sheldon won't be thinking about his mother.

Zack: I see, you were inferring that i'm stupid.
Sheldon: That's not correct. We were implying it... you then inferred it.

What if he's in prison? What if he's a spy? What if he's in a Beatles cover band? I'm just saying if he's got your nose and haircut, he'd make a killer Ringo.

Raj

I admire your father's work. It's not every day that I get to meet someone who's life journey began in my hero's scrotum.

Sheldon

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?