Gary Coleman (Reuters/Fred Prouser)

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Late Diff'rent Stokes star Gary Coleman made light of his unlikely stint as a security guard in season 11's festive episode 'Grift of the Magi', which sees the Simpsons battling sinister 'Funzo' toys over the Christmas season.

Coleman's guest slot was so successful that he appeared on The Simpsons a further two times before his death in 2010.