So many good ones have already been named, but one of my all time quotable movies has been totally looked over. The whole damn movie is gold.
Tombstone:
Wyatt Earp: You gonna do somethin'? Or are you just gonna stand there and bleed?
Wyatt Earp: What makes a man like Ringo, Doc? What makes him do the things he does?
Doc Holliday: A man like Ringo has got a great big hole, right in the middle of himself. And he can never kill enough, or steal enough, or inflict enough pain to ever fill it.
Wyatt Earp: What does he want?
Doc Holliday: Revenge.
Wyatt Earp: For what?
Doc Holliday: Bein' born.
Doc Holliday: Nonsense, I have not yet begun to defile myself.
Doc Holliday: It's true, you are a good woman. Then again, you may be the antichrist.
Kate: I've been good to you, I've taken care of you. If you die, where does that leave me?
Doc Holliday: Without a meal ticket I suppose.
[Doc rides horse out of barn into stable area, Kate runs out after him punching him in anger]
Kate: You bastard!
Doc Holliday: Why Kate, have you no kind words for me as I ride away?
[pause]
Doc Holliday: I calculate not.
[rides off]
Wyatt Earp: From now on I see a red sash, I kill the man wearing it. So run you cur. And tell the other curs the law is coming. You tell 'em I'm coming! And Hell's coming with me you hear! Hell's coming with me!
Turkey Creek Jack Johnson: Nobody move!
Doc Holliday: Nonsense. By all means, move.
[while watching a play in which Faust sells his soul to the Devil]
Curly Bill: You know what I'd do? I'd take that deal 'n' crawfish, then drill that ol' Devil in the ass. What about you Johnny, what would you do?
Johnny Ringo: I already did it.
Doc Holliday: [after killing Johnny Ringo] It would appear that the strain was more than he could bear.
Doc Holliday: [to Johnny Ringo, after shooting him in a duel] You're no daisy! You're no daisy at all. Poor soul, you were just too high strung.
Sherman McMasters: Why you doin' this, Doc?
Doc Holliday: Because Wyatt Earp is my friend.
Sherman McMasters: Friend? Hell, I got lots of friends.
Doc Holliday: ...I don't.
Doc Holliday: You must be Ringo.
[to Big Nose Kate]
Doc Holliday: Look, darlin', it's Johnny Ringo. Deadliest pistolier since Wild Bill, they say. What do you think, darlin', should I hate him?
Billy Clanton: Why, it's the drunk piano player. You're so drunk, you can't hit nothin'. In fact, you're probably seeing double.
[billy Clanton draws a knife]
Doc Holliday: [takes out a second gun] I have two guns, one for each of ya.