I think they are very different Jokers but I like Nicholson's best:
1. You ever dance with the devil in the pale moonlight?
2. make art, until someone dies. See? I am the world's first fully-functioning, homicidal artist.
3. I've been dead once, already. It's very liberating. You should think of it as therapy.
4. Wait'll they get a load of me.
5. Gentlemen, let's broaden our minds!
6. Can somebody tell me what kind of a world we live in where a man dressed up like a bat gets all of my press.
7. I was in the bath one day, when I realized why I was destined for greatness.
8. Jack is dead my friend. You can call me, Joker. And, as you can see, I'm a lot happier.
9. You know, Gordo and I were discussing the pros and cons of winged vigilantes. What's your stance?
10. This town needs an enema!
11. Where does he get those wonderful toys?