Keanu Reeves has been the go-to example of a famous actor being completely terrible at their chosen craft since he landed a supporting role in Francis Ford Coppola's Dracula 18 years ago. I know that his first major role was Ted "Theodore" Logan in the Bill & Ted movies, but Coppola's film was his first large-budget A-list gig - and he completely sucked in it. He was wooden, awkward, and spoke in the worst British accent that I have ever heard. That being said, I don't think I don't think people give Reeves enough credit. There are plenty of other famous actors that are more worthy punching bags. Cameron Diaz comes to mind. Outside of There's Something About Mary and Being John Malkovich, Diaz has jumped from one bad performance to another.
