this was a wonderful way for me to kill time, so i thought i'd share it with you guys. Some pretty good picks with video included. 
http://www.ifc.com/film/film-news/2008/06/the-50-worst-sex-scenes.php
I won't say what number it came, but they were right on the money with that scene from Showgirls. It's where Elizabeth Berkley and Kyle MacLachan were having sex in the pool and she's doing this incredibly asinine move where she flutters up and down like a fish out of water. I don't think i've ever laughed my ass off while watching a sex scene.
http://www.ifc.com/film/film-news/2008/06/the-50-worst-sex-scenes.php
I won't say what number it came, but they were right on the money with that scene from Showgirls. It's where Elizabeth Berkley and Kyle MacLachan were having sex in the pool and she's doing this incredibly asinine move where she flutters up and down like a fish out of water. I don't think i've ever laughed my ass off while watching a sex scene.