"It's a hell of a thing, killin' a man. You take everything he's got, and everything he ever will have."
As close to the line as I can recall off the top of my head, Clint Eastwood says it near the end of Unforgiven and it's always stuck with me. Love Don Corazon's Usual Suspects quote as well, one of my fave movies. Though the Dark Knight is swiftly climbing my list! So here's one from the Joker you guys can feel free to use on an MP opponent that you are about to wipe out:
"You were a schemer. You had plans. And look where that got ya'."
