A lot of people think of Superman as the ultimate superhero. He does, after all, seem to have it everything. You know, invulnerability, flight, heat vision, super super strength, the works. Accordingly, the guys who have played him in the movies have been these big, muscle-bound types. When you think about it, though, if Superman was real he'd probably be really skinny. I mean, here you have this guy who can lift a freight train one-handed, so it would probably be pretty hard to find a set of weights that could offer enough resistance to build up his muscles. Of course, then he'd look a lot less impressive in his tights.
So instead of someone like Brandon Routh or that Smallville kid in the next Superman movie, picture this: The camera moves rapidly across an empty field and up into the air, then beyond the atmosphere and into space where a figure in blue tights and a red cape flies into view. It's SUPERMAN! Starring: Adrien Brody as the Man of Steel!
Yeah. That's how it should be.