I saw Jack Nicholson in "on a clear day" with Barbara Streisand and he stole every scene. Charisma! When he was in "Head" with the Monkees...I suddenly became more interested in what he was doing. He makes me laugh and he scares the crap outta me....the others on your list don't even compare. I don't even think he has been given the proper opportunities. Can you imagine Jack playing the Joker in the Dark Knight? it would have been terrifying!