I saw Iron Man recently, and overall I've got to say that I loved it. But it made me realize one thing that pretty much every superhero movie does that I think is totally unnecessary. Somehow, despite Robert Downey Junior or Tobey McGuire or whomever getting plenty of screentime as the alter ego, they've always got to fit in shots of the hero (or villain) in costume, unmasked.
Generally, the superhero's mask gets pulled off during some climactic final fight, as happened in Iron Man and in more than one Spiderman movie. Even Venom's head peels back to show Topher Grace. Granted, it's not an issue with heroes like Wolverine, Punisher, or Superman who don't wear masks. And with Hulk, they can't really do it at all - they can only show you the full transformation as you watch Ed Norton change into the Hulk or Eric Bana change into Babyface Hulk. But the next time I see a superhero pull off a mask for no other reason than to show the actor's face, I'm going to die a little bit inside.
Anyone who doesn't get why should just take a drive away from the city lights some dark night, then turn on the interior lights in the car. When you get tired of looking at your reflection in the windows, you'll get it.