Quoting time! It seems weird that I would be reading the quotes before watching the movie. What?

Vizzini: Jump in after her!
Inigo Montoya: I can't swim.
Fezzik: I only dog paddle.
Vizzini: AGGHH!

[fencing]
Inigo Montoya: You are wonderful.
Man in Black: Thank you; I've worked hard to become so.
Inigo Montoya: I admit it, you are better than I am.
Man in Black: Then why are you smiling?
Inigo Montoya: Because I know something you don't know.
Man in Black: And what is that?
Inigo Montoya: I... am not left-handed.
[Moves his sword to his right hand and gains an advantage]
Man in Black: You are amazing.
Inigo Montoya: I ought to be, after 20 years.
Man in Black: Oh, there's something I ought to tell you.
Inigo Montoya: Tell me.
Man in Black: I'm not left-handed either.
[Moves his sword to his right hand and regains his advantage]

Inigo Montoya: Who are you?
Man in Black: No one of consequence.
Inigo Montoya: I must know...
Man in Black: Get used to disappointment.
Inigo Montoya: 'kay.

And when they challenged each other to drink the poison. Freaking hilarious xD