Kicking off a quadrilogy of comedies starring Chevy Chase as well-meaning doofus Clark Griswold, National Lampoon's Vacation is a classic comedy from the 80s that still holds up well today.
The movie throws tons of jokes at you one after the other, and watching Clark struggle to give his family the best vacation ever while slowly descending into insanity is completely hilarious. However, even if you're a massive fan like we are, we're pretty sure you probably don't know a few of these facts about the movie!
It was directed by Harold Ramis, who you probably know as Egon Spengler in Ghostbusters
Anthony Michael Hall grew three inches between finishing the movie and reshoots
They had to change Rusty to being the oldest sibling because of it.
The ending was changed after test audiences hated the original one
The original ending had the Griswolds take Roy Walley hostage, which got repurposed into the ending of National Lampoon's Christmas Vacation.
Imogene Coca had a hard time playing Aunt Edna
She couldn't handle how mean Edna was, and kept apologizing to the other actors after her scenes.