Some holiday movies become traditions, and National Lampoon’s Christmas Vacation is one that families return to year after year. With its over-the-top decorations, chaotic relatives, and Clark Griswold’s unstoppable determination to create the perfect Christmas, the film captures the joy and madness of the season like nothing else. Part of its lasting charm comes from the unforgettable cast who brought every joke, meltdown, and heartfelt moment to life. Here’s a look back at the actors behind the classic characters—and where their lives and careers have taken them since.