Unimaginably Cool Details About The Most Iconic Movies Ever

Mandy Patinkin's father passed away from cancer during the production of The Princess Bride, and he took a short leave to attend the funeral. His first scene back was his duel against the six-fingered man, so the line "I want my father back" had real meaning to him. Patinkin reflected that during that performance, "I killed the cancer that killed my father and for a moment he was alive"

Actors sometimes talk about stage health, in which the focus of performing allows them to temporarily overcome any sickness they might have on any given day. If you need a real-life example, just look at Gene Kelly. He sang and danced to the title song of Singin' in the Rain with a fever of 103 degrees!

Steven Spielberg made all of his principal cast members go through basic training in order to convincingly play soldiers — except for Matt Damon. He singled Private Ryan out so that the other actors would naturally see him as an outsider and someone who didn't share in their hardships.

Do animals know they're acting? Well, you can certainly say that the dog who played Fang in Harry Potter and the Chamber of Secrets got a little too character. Apparently, every time the animatronic Aragog spider lunged toward Daniel Radcliffe, the mastiff got in between them and barked ferociously.