Any good horror/porn films?

K, so I was watching Hardgore last night, which works best as an interesting oddity ~ the combination of hardcore porn, graphic violence and surrealism ~ but it's a pretty slow moving affair, with the energy of a sloth and the horror scenes, while decent, are spread far too thinly apart.

Are there any horror/porn hybrids that genuinely work as a horror film? I doubt it, since it seems the whole point of these films are the sex scenes, but they're often much too long and not even all that hot to begin with. I just want a good, nasty, violent horror film with hardcore pornography here and there. Is that too much to ask? Sheeeit.