"Hello. My name is Indigo Montoya. You killed my father. Prepare to die."
A fave from The Princess Bride, right along with: "Why do you keep using that word? I do not think it means what you think it means."
A few from Kiss Kiss Bang Bang:
Harry: . . . But it's abandonment, it's abuse, it's, "My uncle put his ping-ping in my pah-pah!"... and then they all come out here! ... I mean, it's literally like someone took America by the East Coast and *shook* it, and all the normal girls managed to hang on.
Harmony: OK, everyone who hates Harry raise your hand!
[all the girls in the club raise their hands]
Perry: See that? Obedient little bitches too.
[girl screams "Fuck you!" and throws a glass, which he dodges]
Harry: Do you think I'm stupid?
Perry: I don't think you'd know where to put food at, if you didn't flap your mouth so much. Yes. I think you're stupid.
Perry: You don't get it, do you? This isn't "good cop, bad cop." This is fag and New Yorker. You're in a lot of trouble.
Harmony: Well, for starters, she's been fucked more times than she's had hot meals.
Harry: Yeah, I heard about that. It was neck-and-neck and then she skipped lunch.
Harry: Still gay?
Perry: Me? No. I'm knee-deep in pussy. I just like the name so much, I can't get rid of it.
Mr. Frying Pan: Well now, here we all are. Ike, Mike and Mustard.
Harry: What the hell does that mean?
Mr. Fire: You know, I'm with him on this one, man, that's pretty fuckin' obscure.
Could quote that movie forever. Don't even get me started on The Big Lebowski.
And from The Lion in Winter, in honour of Peter O'Toole:
Prince John: A knife! He's got a knife!
Eleanor: Of course he has a knife, he always has a knife, we all have knives! It's 1183 and we're barbarians!
Prince Geoffrey: I know. You know I know. I know you know I know. We know Henry knows, and Henry knows we know it. We're a knowledgeable family.
Henry II: I found out the way your mind works and the kind of man you are. I know your plans and expectations - you've burbled every bit of strategy you've got. I know exactly what you will do, and exactly what you won't, and I've told you exactly nothing. To these aged eyes, boy, that's what winning looks like!