Leonardo was great in Gilbert Grape and Jim Carrol (or whatever the name of this movie was, where he played a junky). He was a decent evil king in the man with the iron mask (And for all, who ask, why he was cast: He draws the chicks, ah sorry, girls, to a movie, only boys would normally attend to. (By the way: what a great charge!!!!). The same goes for most other actors, who are cast to get to the lower part of the body of either male or female audiences (I should know, my wife loves Keanu and I myself think, that J.Lo is quite hot in this one scene in this dream-movie (oh, the movie was that bad, I even can't remember the title)).
Dustin Hoffman does it for me. He is a great "actor" (although it is said, that he does not act but lives the roles) but he has some rather silly ways.
Andy Macdowal (or however she is written). She ruins every movie.