Ok. I suppose I can start by telling you the ones I've seen before.
Thats about it... hehe... quite a list, isn't it? So, yeah. I'll go for any horror anime/manga you guys can come up with. Gotta love those blood and guts ^.^
- Higurashi No Naku Koro Ni / Kai
- I started watching Ghost Hunt
- Parts of Gakkou no Kaidan