The Google Superhero Costume Parade
As a fan of the Man of Steel, watching the images of other, far less rational or fashion-conscious fans putting on Superman costumes is always a source of delight. Scott Niven's Saltwater Pizza has put together a "parade" of Superhero costume images. He's designed a neat little drop-box that gets you instant pictures of people in their foolish, sometimes homemade superhero costumes, straight from Google Images.
Of course, as funny as those are, nothing beats the Superman costume for dogs.
Random fact: Did you know the word "superhero" is actually a trademark jointly owned by DC and Marvel Comics? Read about it.