Who's Missing?

The U.S. Postal Service is teaming up with cartoonist Matt Groening to issue a set of stamps with the main characters from The Simpsons. There will be stamps with Homer, Marge, Bart, Lisa and Maggie. I saw pictures of the stamps and thought, hey, wait a second! Someone important is missing! No Simpsons stamp set is really complete without a Mr. Burns stamp! But is there a Mr. Burns stamp? Nope.

I'm very disappointed.