* Why am I doing this? *
Peter Sellers: very hard choice here, but I love The Pink Panther saga

Marlon Brando: The Godfather
Robert De Niro: another hard one, Taxi Driver is a cult though.
Tim Roth: I don't care.
Gary Oldman: Dracula
Steve Buscemi: The Big Lebowski
Robert Carlyle: The Full Monty
Sean Penn: Can't be bothered
Clint Eastwood: His acting is pretty much the same in every damn movie, so I'd say the ones by Sergio Leone
Christopher Walken: I love his set of teeth on Sleepy Hollow

Morgan Freeman: Seven
Samuel L. Jackson: Pulp Fiction. He's also a great Jedi Master anyway!