Actor/filmmaker Mel Gibson stopped by "The Simpsons" in 1999 as himself in "Beyond Blunderdome," poking fun at himself, several of his own movies, and Hollywood blockbuster action flicks in general. When Homer attends a test screening of Gibson's remake of "Mr. Smith Goes to Washington," he hates it, so Gibson hires him to help fix the film. The result: a new ending in which Mr. Smith goes into a rage and takes out the president and every member of Congress.
The Best 'Simpsons' Guest Stars
From regulars like Kelsey Grammer to one-offs like Winona Ryder, stars love Springfield.