For the curious and uninitiated to the darker side of human intercourse, this vid may be the perfect beginning.  With Erotic Underground, one needn't stray from the comfort of their Barcalounger to witness an escalating series of adventures in deviant sexuality.

At first the tape mucks around in safe territory, taking the viewer by the sweaty palm on a guided tour of pretty-girl dyke bars and tattoo parlors from L.A. to Manhattan to Tokyo (and numerous stops in between.)  Just when you think it's beginning to look like sweeps week on Hard Copy, the documentary veers off into coverage of the Dressed to Thrill Ball in L.A. and The Alternative Lifestyles Convention in San Diego, where all manner of creatures scamper around in what appear to be costumes left over from Beetlejuice, looking for acceptance and a decent hand job.  Likewise, the Mother Goose School for Social Masturbation, conceived and conducted by a mustachioed, middle-aged guy in a Bo Peep outfit, is a San Francisco hangout (and we do mean that literally) where everyday folk go to meet, greet and get off.

For the uninhibited, Budapest is where it's at.  With virtually no laws against pornography or consenting adult sexuality, this former Hungarian hotbed of Communism is now just a hot bed, hosting thousands of sex clubs and after-hours joints (and judging by this vid, a horny tart on every corner just hankering for a jizz Mimosa).

Paris, aka The Big Croissant, also keeps a few dark secrets carefully hidden under its flaky crust, such as Defi -- a sex retreat where randy amateurs go to have their fifteen minutes of fame recorded on video.  Christophe Morthé, the heir-apparent to Helmut Newton, also rents his digs in France, where he creates the finest of S&M photos for discerning clientele.

Finally, a last stop in Las Vegas brings it all home, as the humorously-pseudonymed Danté Amore of Paradise Electro Stimulations hovers around a bizarre-looking chair which rests in a settling just one step removed from the laboratory in Bride of Frankenstein.  In the quest for a better orgasm, Amore dutifully proceeds to insert an electrified 21st century dildo up a young female volunteer's ass.  Now that's all-American ingenuity at its finest (and not a bad way to justify the Barcalounger analogy).  All aboard the Erotic Ungerground!