Most of my favorite Quotes are from Futurama but two of my favorite:

"Branigan's Law is like Branigan's Love, hard and fast." - Zapp Branigan

"I don't want to live on this planet anymore." Professor Hubert Farnsworth

and from Firefly:

"You know what the chain of command is? It's the chain I go get and beat you with until you understand who's in ruttin charge here." - Jayne

"Next time you want to stab me in the back, have the guts to do it to my face." - Malcolm Reynolds

"Has anyone in this family ever even seen a chicken? - Michael Bluth, Arrested Development
(after all the chicken dancing he's seen his family do)