COMICS CHARACTERS MOVE THE MAIL IN 2006!
Superman, Batman (without Robin!), Wonder Woman, Supergirl, The Flash, Green Lantern, Green Arrow, Hawkman, Plastic Man, and Aquaman will become the Postal League of America next year as the featured images on a series of commemorative stamps issued by the United States Postal Service, as reported on Newsarama and brought to my attention by Harry Broertjes.
Here's the image I'm trying to upload (without cooperation from Blogger).
According to the USPS, the series will be followed in 2007 by Marvel characters. See the USPS release here.
I've got to guess that the comics stamps are the result of the Postal Service's short-lived make-your-own-stamp program, in which you could provide an image that would be made into a stamp. I wonder how many images of SANDMAN got uploaded...?
Ah, well, after Marvel it's only a short step to Charlton, Atlas, and First. Grimjack, anyone?