I recently watched this stop-motion animated horror movie called La Casa Lobo. It's about a girl in Chile who runs away from a German colony to stay in a forest, only for everything to go to hell, as is the case with most horror movies. Apparently, it's based on true events- there was a German colony set up post WW2 in Southern Chile, which suffered a 40 year reign of terror after a former Nazi corporal was appointed leader in 1961. People were abused, drugged, made to work like slaves, and the Chilean government actually sent political dissidents there to be tortured instead of, y'know, stopping the rampant HR violations.
I went into the movie without all this context, but it's still a fascinating film- the use of misshapen, vaguely humanoid sculptures in a claustrophobic cottage really conveys the sense of a mysterious, alternative world locked within the woods, where the rules of logic don't apply and people have to suffer all the madness of old fairytales without any hopes of a magical ending. The way the stop-motion morphs environments really plays with your sense of space and security, making you feel like everything's forged from clay that shifts when you're not looking. It isn't just pretty or creepy for the sake of it either- the animations mirror the protagonist's frame of mind, so dark, empty rooms slowly start to get filled with dancing, undulating furniture as her eyes grow used to the shadows, and the structure of the house morphs as she starts to consider herself a living, breathing part of it. I won't spoil the trippier stuff, but suffice it to say that the movie's got some of the most surreally disturbing sequences I've seen in quite a while.
The whole film really just makes me wish there was more animated horror- the things you can do with a world moulded completely to a creator's mind far outweigh any trickery you can pull with actual sets and actors. Animation excels at nonstandard explorations of perception, at warping biology and physics past every boundary, and at creating landscapes dripped in rich allegory and symbolism- all of which are landmarks of the horror genre. It conveys terror in shifting, dreamlike ways seen only in nightmares, childhood or delirium, and goes beyond mere plot conventions to create experiences that are different on every level. It's an excellent, thoroughly unconventional film from start to finish, and I recommend it to anyone who's looking for a new and daring breed of horror.