"Actors," said Alfred Hitchcock, "are cattle." You control them with a pointy stick. You tell them where to stand. You leave them in a field all day, chewing regurgitated grass. You pull on their teats when you need a drink. No, I am not entirely sure where he was going with that. But actors should definitely do what they're told, otherwise how will the director's vision make it to the audience? Actors are the vital conduit between text and audience. And they make empty, melancholy mooing...