Dustin Hoffman is one of the greatest American actors. In fact, I think he's the greatest one.
Dustin is short, plain looking and you will never find him if he was in the crowd, but he was so fantastic.
In RAIN MAN, Dustin acted an autism who was a brother of the character of Tom Cruise, but he was a genius on another side in his life. In front of Dustin, Tom was a nobody, just because he faced a so strong acting.