Many of my favorites are from Doc Holliday (Val Kilmer) in Tombstone:
Ah've got two guns--one for each of ya.
It appears my hypocrisy knows no bounds.
Ah'm your huckleberry.
You know, Frederic fucking Chopin.
Nonsense! I have not yet begun to defile myself.
It's true, you are a good woman. Then again, you may be the antichrist.
You know, if I didn't think you were my friend, Ed, I don't think I could bear it.
Oh. Johnny, I apologize. I forgot you were there. You may go now.
And a few from French Kiss:
Luc: For me, bullshit is like breathing.
Kate: You lost your birthright in one hand of poker?
Luc: I'm an asshole, what can I tell you?
Luc: When people tell me they are happy, my ass begins to twitch.
. . . Kate: You'll be one of those grumpy old men sitting in the corner of a crowded café, mumbling to yourself, "My ass is twitching. You people make my ass twitch."
Kate: [singing] . . . I hate Paris/Why oh why do I hate Paris/Because my love is there . . . with his SLUT girlfriend.
Luc: I don't like how you say with your face all scrunched up, "You're French, aren't you?" And then I don't like how you say, with your eyes all squinty, "All men are bastards."
Kate: Screnched?