There are quite a few topics already asking what your favorite movie is, but I'm asking what you favorite line from any movie is. It doesn't necessarily have to be a line from a movie you liked, just a one liner that has stuck with you, or that you say occasionally.

My all time favorite line comes from the "Wizard of Oz", when the wicked witch says to Dorthy "I'll get you, my pretty... and your little dog too!!!"
And from the same movie, when Dorthy is scolding The Wizard, "You're a very bad man!"

My second would be from "LOTR: The Fellowship ...", when Gandalf and Saruman are walking in the garden at Isengard, and Saruman says to Gandalf... well, see my sig.

The third would be from "Evil Dead", when Ash fastens the chainsaw to his arm, loads his double barrel shotgun with his teeth, then snaps the breech of the shotgun closed. He looks into the camera and says "Groovy".
I laughed at that scene till I had tears in my eyes the first time I saw the movie.

Ok, what are some of yours?

"ENGLISH MOTHER [censored], DO YOU SPEAK IT?"

Woman- "Where should I go? What should I do???"
Man- "Frankly, miss, I don't give a damn." -man walks dramatically into sunset-

"Sentinels are built perfectly to do one thing and one thing only: search and destroy."

From The Matrix - one of my all time favourite films, but that line (I think it's Tanks?) always makes me laugh.

http://www.youtube.com/watch?v=8TRAnly5viA

"HOW MANY [censored]S DO WE HAVE ON THIS SHIP?"
+5 for guessing the movie

Spaceballs

"This is what happens Larry-" smashes windshield, "-this is what happens when you [censored] a stranger in the ass!"

I guess everyone knows.

"I'm gonna make him an offer he can't refuse." - The Godfather

"Yippie kay yay, mother[censored]." - Every Die Hard movie.

"I'm sorry Dave, I'm afraid I can't do that." - 2001: A Space Odyssey

"Surely you can't be serious?" "I am serious. And don't call me Shirley." - Airplane!