The field is so big, I think there should be categories. For instance, Keanu easily wins "Most Wooden". The call about him in that Much Ado movie, bang on BTW. Biggest Ham would go to Shatner (hope he's not kosher given his prize), Always Plays The Exact Same Character of course goes to Kostner. IMO, the overall poorest "real" actor though, has to be Martin Lawrence.