Sexual aberration - sesso perverso (1979)

Libidomania is great for what it is, an ambitious and exploitive attempt to categorize and critique every manner of paraphilia in graphic detail, but it all has no shock value as most of the movie is comprised of dramatizations of different fetishists in action and different extreme angles on sexuality from around the world. You get some nice gory dramatizations such as a penile dismemberment (a great effect that beats the one in Cannibal Holocaust hands down), a sex-change operation, and a gut-slicing necrophiliac plus a woman wearing a prosthetic penis to stand in for a transsexual. Figure in some sleazy historical scenes like a nun getting head from a bishop, too. At least Mattei keeps it sleazy.