Every year, Seattle's awesome alternative weekly The Stranger hosts a porn/sexually-oriented-filmmaking-of-some-sort festival called HUMP!
I'm going to be in an entry for this one! I won't be doing the nakey on film, sadly, just acting as a talking head in a documentary, but hey. That's the perfect compromise, right? No theoretically-life-destroying porn taint, but the opportunity to appear in the sexual media nonetheless.
I'm pretty sure that once you talk about sex in a documentary, you officially become a "sexpert."