"Christmas Vacation" is a 1989 comedy film directed by Jeremiah S. Chechik. It is the third installment in the National Lampoon's Vacation series, featuring the character Clark Griswold, played by Chevy Chase. The story follows Clark as he attempts to create the perfect Christmas for his family, leading to a series of humorous mishaps and unexpected challenges. The film showcases the antics of the Griswold family, including Ellen Griswold (played by Beverly D'Angelo) and their children, as they navigate holiday preparations. Iconic scenes include Clark's struggles with Christmas lights and the arrival of quirky relatives, making it a beloved holiday classic.