Dustin Hoffman is an American actor who has won two Academy Awards for Best Actor in the movies "Kramer vs. Kramer" and "Rain Man."
He was in an animated film called The Tale of Despereaux.
A few films Dustin Hoffman has appeared in are The Graduate, Rainman, Perfume, Last Chance Harvey, and Meet the Fockers. See related links for more details.
Not in the slightest. He simply did a great job of acting like an autistic adult -- which is why he is called an "actor."
If by Faye you mean Faye Dunnaway, then you can see those two actors in Little Big Man (1970)