Obviously, we're no longer a Justice League. We have no choice but to switch to our Muppet Baby costumes.

Sheldon

Leonard: It's what we do. We give each other a hard time. Hey, Sheldon, you look like a praying mantis.
Sheldon: That was very hurtful.

I was thinking specifically of the gentleman over there, moving his lips as he enjoys the latest exploits of Betty and Veronica.

Sheldon

Amy Farrah Fowler doesn't believe in wearing costumes. She isn't the free spirit I am.

Sheldon

We're the Justice League of America. There's only one thing we can do - turn around and slowly walk away.

Sheldon

Zack: Where do they keep the Archie comics?
Sheldon: In the bedrooms of ten year old girls were they belong.

Zack: I haven't been to a comic book store in literally a million years.
Sheldon: Literally? Literally a million years?

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

Was the starfish wearing boxer shorts? Because I'm pretty sure you were watching Nickelodeon.

Sheldon

Leonard wake up! You're missing some very excellent superhero quips!

Raj

I obviously have the flu, coupled with sudden on-set Tourette's Syndrome.

Amy

Amy: I have potential for sexual arousal.
Sheldon: A cross we all must bear.

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?