Fox and the US Postal Service have collaborated on a new set of stamps featuring The Simpsons. The stamps were designed by Matt Groening himself, which is kind of cool, considering the enormous commercial enterprise built around these characters.
Anyway, the National Postal Museum is dedicating Saturday, July 18th to the Simpsons. The first 1,000 visitors to the museum that day will recieve a first day cover, with the stamps canceled on their first day of issue. (View a sample.)