Sex:  a sure way to captivate an audience.  Media and entertainment industries have exploited our fascination with reproductive processes and, sometimes, perversions of that routine.  This video, titled "Porn", takes a mix of clips from the 50s, 60s, and 70s.  Check it out:

It's kind of weird to look at this vinatage stuff sometimes, because you really have to wonder just how much the perception displayed in this mashup has really changed.  In terms of mainstream media, the idea of sexual horror is still draws a crowd.  Take Megan Fox's new movie, for instance:

Now, maybe these are related on the level of disturbing sexyness, but the trailer for Jennifer's Body suggests that we can sort of mock the concept of a murderous, monstrous vixen who kills every guy she screws.  Some other movies haven't been as tongue-in-cheek:

Species attempted to take itself very seriously, as a genetically-engineered hybrid human/alien attempts to reproduce in order to create a beachhead for an alien race bent on killing humankind.  And to wrap this post up, let's go only slightly further back in time and remove science fiction from the equation:

Is Buffalo Bill all the more frightening because of his sexual ambiguity?  What is more frightening: the thought of an innocent girl getting murdered, or the idea that her killer will be using her body as material to become a cross-dresser in human flesh?  Clearly the questions of how sexual horror is used to captivate audiences and what it says about us as a collective audience is one that can't be answered immediately by a blog post.  Still, they are ever-present, and therefor worth considering.