4. Christopher Reeve - Superman
It's no easy task to find an actor who can effectively portray a comic book superhero, let alone Superman, a character pretty much written to make every man everywhere feel bad about themselves. Men have tried and failed to do justice to the role. I mean, how do you find a real live man who not only has the necessary muscle-to-fat ratio of Superman, but also the chiseled good looks and ability to wax poetically about truth, justice, and the American way? Answer: you don't. But then Christopher Reeve came along, and everyone breathed a tremendous sigh of relief. Because seriously, you could try for another 100 years and never find someone who came so close to the original design of the character. Knowing Marvel, though, you know they're going to take a crack at it.