For America's multimillion-dollar Superman industry, it's a serious problem. This is a guy who's from outer space — he was born on the planet Krypton, let's not forget — but he's also from another time. He debuted in the 1930s, when Americans liked their heroes like they liked their steaks: tough, thick and all-American. Nowadays we prefer our heroes dark and flawed and tragic. Look at the Punisher (wife and kids dead), or Hellboy (born a demon), or Spider-Man (secretly a nerd). Look at Batman: his parents were killed in front of him, and he dresses like a Cure fan....