What movie do you see too young, that still scares you today?

Ringu.

I was about six or seven when I watched it despite my parents telling me to go to sleep. I can hear my father watching it and me trying to pretend to sleep and watch it at the same time.

I wasn't able to sleep after the movie and wasn't able to sleep without a light in my room and a blanket covering all my body (which sucks during summer because I live in a tropical country) for the next two decades. Wasn't able to sleep properly, too without any background noise as I often experienced sleep paralysis without it.