A movie that actually disturbed you?

I remember being a horror lover since I was about 7 or 8 years old. Me and my mom would tune in to some amazing horror movies such as Halloween and Saw etc. But when I saw Insidious (first version) my god. I could not sleep. It still scares me and i don’t know, I really hate the dancing devil thing and the babies bedroom demon. Not to mention in the second(?) movie that woman in the bedroom.