13. ELIZABETH BERKLEY AND KYLE MACLACHLAN IN SHOWGIRLS (1995)
For obvious reasons, we can’t show the sex-in-the-pool scene from Paul Verhoeven’s legendary clusterfuck Showgirls. It’s basically porn, albeit of the pretentious Hollywood studio variety. It’d be irresponsible of us to completely exclude the scene from this list, however, since Elizabeth Berkley’s moaning and commitment to delivering a lifelike fake orgasm are tough to forget. The movie itself is a colossal failure, and Berkley’s acting is bad enough to make the least talented of adult film actresses say, “This chick sucks!” But man can she sell a sex scene.