with the remainder of the top 5. I don't scare easily anymore. So it's hard for me to judge because movies I found scary as a kid don't scare me at all now. I think the most effective horror movies are ones that build a sense of dread in the audience as opposed to ones that rely on jump scares. In that vein, there is no horror film, released within the last 20 years or so, more effective than Hereditary.