Ok. I suppose I can start by telling you the ones I've seen before.
  • Higurashi No Naku Koro Ni / Kai
  • I started watching Ghost Hunt
  • Parts of Gakkou no Kaidan
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 ^.^