"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."