Leading men are so cliched. They're so boring, so predictable. But when you get a really kooky, offbeat villain you can explore all kinds of devious twistings and turnings in the human mind. If you're a hero, well, they're all interchangeable. I don't think they're so interesting as these basic characters, which are the mainstay of all the shows anyway. People tend to remember the villains more than the heroes. Everybody wants to hiss and boo. It gives them a sense of superiority because they can feel, "Well, at least I'm not as bad as he is.".