I think Smithers picked me because of my motivational skills. Everyone always says they have to work a lot harder when I’m around.— Homer
The Simpsons has had hundreds of celebrities lining up to provide voices. Sometimes they play themselves but often—and more successfully it must be said—they voice a new one-time character. Some are so good they're allowed back! Here are the top ten guest stars by official number of appearances:
Below is a complete list of official guest stars to date. Episodes without guest stars are omitted. The regular voice artists are listed in the cast list.