Even Homer might have more to say than "D'oh".

Nancy Cartwright, the voice of Bart Simpson, signs a poster at the unveiling of the new "The Simpsons" U.S. postage stamps in Los Angeles May 7, 2009.

"The Simpsons" -- America's most-loved dysfunctional family -- got their own postal stamps on Thursday, becoming the first television series to be featured as the sole subject of a U.S. stamp set while still in primetime production.

The set of five stamps depicting Homer, Marge, Bart, Lisa and Maggie Simpson were issued to celebrate the 20th season of U.S. television's longest-running comedy.

"We are emotionally moved by the Postal Service selecting us rather than making the lazy choice of someone who has benefited society," quipped James L. Brooks, the executive producer of the animated series.

"It's only supposed to be dead people on stamps. Somehow we were able to overcome that."

"The Simpsons" debuted as a series in December 1989 with a Christmas-themes episode called "Simpsons Roasting on an Open Fire."

It went on to win 24 primetime Emmys and was renewed by Fox television earlier this year for two more seasons.

(China Daily/Agencies May 8, 2009)