yay!  

I don't have any favourite quotes.I just want to say that invader zim is the most insanely funny cartoon i've ever watch!

[I think this can be considered a quote] When Gir sings the doom song!
I'm gonna sing the doom song now!
Doom doom doom doom doom!
doomie doom doom doomie doom doom!

I have quite a few.
Gir: You gonna make biscuits? You gonna make biscuits?? Yoouu gonna make biscuits? Yooouuu gonna make biscuuuiiits?
Zim: No, Gir. Never. I never want you to mention biscuits ever again.

Zim (hands up in the air): Go home and shave your giant head of smell with your bad self!
Dib: OK. There's all kinds of things wrong with what you just said...

Computer: Processing. Processing! (It's about the way it speaks :P )

Ms. Bitters: If I have to put up with the awesome force of your collective child stench everyday, then so shall you all!

Gir: Do de do de do de do de do!
Zim : Attack!
Gir: (in his defense mode voice) Yes sir! Do de do de do de do de!(Again you have to hear it!)

Zim (eating waffles): Hey, these's aren't bad. What's in 'em.
Dib: There's waffles in 'em.
Zim: You're lying!

Ohh--just about everything said in the show is hilarious! ^_^