Heath Ledger vs. Jack Nicholson?

That's because Joker is supposed to be the insane type that's just his personality he's not just some silly clown but he also has those split personality where he just goes mad too. I go for Heath Ledger all the way because he was just so original with his lip licking, lazy eye blinks, the way he walked and etc. which is what people loved about him. Even though I also liked Jack Nicholson.