"The Simpsons" U.S. postage stamp unveiled in Los Angeles

"The Simpsons" U.S. postage stamp unveiled in Los Angeles

Creator and Executive Producer Matt Groening, Nancy Cartwright, the voice of Bart Simpson and Dan Castellaneta, the voice of Homer Simpson (L-R) sign posters at the unveiling of the new "The Simpsons" U.S. postage stamps in Los Angeles May 7, 2009. (UPI Photo/Jim Ruymen)