People Are Debating The Scary Movies That Are Technically Not Horror But Still Scare Like Horror

List Rules
Vote up the non-horror movies that scared you the most.

"What movie isn’t *technically* a horror movie but feels like a horror movie to you...?" - @NetflixFilm

Folks on social media are having a debate about the "family friendly" movies that left a lasting impression, and not in a good way. Here are a few scary movies that are not horror movies, but can do the trick if a scary movie is needed.