Watch The Simpsons Season 21 Episode 1 online via TV Fanatic with over 6 options to watch the The Simpsons S21E1 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, YouTube Purchase, Google Play, and Simpsons World.
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In the twenty first season premiere, written by Seth Rogen, Comic Book Guy's comic, Everyman, becomes popular and it's made into a movie. Homer is cast as the lead role, but struggles staying in shape for the role.