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Other mistake: When Homer thinks he's out of the dome, he has a reflection, but Marge doesn't. (00:30:20)

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Continuity mistake: This is when Homer is about to conquer the 'Ball of Death', on his third attempt. As he is going up, just after Lisa shouts, "Don't slow down, speed up," when Homer has his fingers on the brakes, the Ball of Death suddenly gets a lot bigger.

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Continuity mistake: When Evan goes back in time to when they are putting the blockbuster in the mail box, his cigarette falls out of his mouth and onto his shirt. He gets burnt, as is shown when he returns to modern times, but all the rest of the scenes with them in the forest just after it happens, there is no burn mark on his shirt.

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