Holy Grail

Arthur: "Old Woman!"
Guy turns around: "MAN!"

Dont ask me why but i burst in to laughter everytime... hehe and the hilarius dialog that follows is to complicated to write down.

Star Wars:
"Im your father!"

Fear and Loathing in Las Vegas:
"We can not stay here, this is bat country"
That has to be one of Jonny Deps best movies.