Here's two, one cut of the dead if you want something really meta (but not really scary), and the brood if you want some good ol' Cronenberg body horror stuff. I'm not a fan of horror movies in general. Too many of them have terrible writing that relies on characters that don't think or act only as the script tells them to, a fuckton of deus ex machina moments and cheap violence, shock and jumpscare exploitation. Alien and The Thing are fantastic exceptions to this rule. If anyone knows any other films where people actively try to figure out how the creature/evil thing works along some line of logic or physical traits, please let me know. Also I've already seen Troll Hunters, it was okay.