10. National Lampoon's Christmas Vacation (1989)

Chevy Chase is at the top of his game in this sight-gag-and-one-liner-laden homage to the love/hate event that is the family Christmas. Where, besides this list, is there a place big enough for a movie with Yule laughs this huge? As Clark Griswold would say, "Bend over and I'll show you."

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