9 Sci-Fi Horror Movies That Went Too Far

9. Species

Interspecies erotica, hey? And for those of you who haven't seen Clerks II, interspecies erotica is exactly what you're thinking.

While 1995's Species didn't feature a donkey and its would-be human suitor, what the film did have was a terrifying sex scene between Alfred Molina's Dr. Stephen Arden and Natasha Henstridge's Sil. Of course, there is far more to Sil than simply the visage of former model Henstridge - for she is actually an alien/human hybrid.

Audiences had half-expected such a 'unique' sex scene to take place, for a good chunk of the movie revolves around Sil's desperate need to mate. When she finally finds somebody to bump uglies with, it's Molina's Arden who ends up being Sil's mate of choice.

Pulling a black widow move, Sil soon kills Arden after the deed is done.

This isn't the only chilling, skin-crawling moments of Species, mind. Earlier in the film, we'd see some prick try to rape Sil after she'd decided not to have sex with him once she'd realised he was diabetic. We'd later see Henstridge's character also pretend to be a victim of domestic violence in order to win the sympathy of a woman she'd quickly kidnap and assume the identity of.