Known to be the scariest movie of all time, the Exorcist, based on real-life events follows a 12-year-old girl as she becomes possesed by Satan himself. The Exorcist was nominated for 10 Academy Awards (including Best Picture and Best Director) but only took home Best Sound and Best Adapdted Screenplay. Linda Blair (who played Regan, the girl) was never again offered a role in any other movies. She did such a phenominal job, people believed she was really possesed.
Scare your parents by telling them your bed is shaking.