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Watch The Simpsons Season 18 full episodes online, free and paid options via our partners and affiliates.
Bart becomes Nelson's best friend, and discovers how possessive Nelson can be. Meanwhile, Homer finds himself hooked on one of Lisa's fantasy books.
The Simpsons' annual Halloween hodgepodge. Phil McGraw, Richard Lewis, Fran Drescher, Sir Mix-a-lot and Maurice LaMarche guest star.