Glad you like Italian horrors and yes bizarre topics interest me too especially the stuff about witchcraft and paganism. I'm only just starting to watch exploitation films-I've seen a few of the UK 60s and 70s ones plus several by Jess Franco. I haven't seen The Human Centipede films cos a mate of mine (without me asking him to) spoiled the entire plots of both of them so much so that I don't feel I need to see them.
For the sick stuff you should go to
http://www.horror-extreme.com/video-nasties/ and read about the video nasties their I still haven't seen them all myself yet as a few still aren't available on dvd