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Very few series have been on the air anywhere near as long as The Simpsons has, which means very few TV shows come close to being on the same level when it comes to guest stars. Beloved characters like Sideshow Bob and Fat Tony wouldn't exist without recurring guest actors like Kelsey Grammer and Joe Mantegna, but we're here to appreciate a smaller sub-section of Springfield visitors: celebrities who have played themselves.
Though The Simpsons has relied far more on famous folks playing fictional characters, the series has also boasted a wide variety of celebs from the worlds of art, entertainment, sports and literature across the past several years. Now let's look at a bunch of famous faces who popped up in 2D alongside the Simpson family and other characters.