Showgirls is pretty steamy. There's a scene where the lead actress gives Kyle MacLachlan's character a lap dance and forces an orgasm out of him by riding him through his trousers.
Also, I'm quite worried how deeply this scene affected me and has stayed with me ever since watching Wild at Heart for my university course years ago. The scene is between Willem Dafoe and Laura Dern's characters. Dafoe plays a truly vile and repulsive character (including physically) who forces himself on Dern, turns her revulsion and horror into desire and then trolls her hard. I remember being both sickened and aroused at uni. 
The scene: https://www.youtube.com/watch?v=LUtn7e05C8M
Fifty Shades of Grey the movie unseen addition. The Red room scene must be one of the hottest mainstream scenes .It always make my Mrs cross her legs especially the riding crop hit on her lady parts.
To mysteron. I heard 50 Shades was so bad I haven't even been able to bring myself to watch it even though it's now on Netflicks.
My wife is a big critic of the film but that is because she has read the books. Sure the final scene doesn't do the film any favours because it's so wrong.But for the rest of t he film the scenes are quite explicit for a mainstream film .
Crimes of Passion. With a young, lithe Kathleen Turner playing a prostitute specialising in kink, and so many fetishes enacted, there is something for everyone. Want to see a policeman dominated and penetrated with his own nightstick? Bingo!
If you don't get a twitch in the crotch at this movie, call in the crash-cart.
Film called Valentine with Denise Richards. In one scene a male character gets her upstairs for some fun and she ends up tying him to the bed with silk scarves, blindfolding him, and dripping hot wax over his "parts"! Well, we can only dream!
Remembered another one; sex scene between Jude Law and Rachel Weisz in Enemy at the Gates. They're both Russian soldiers fighting in the seige of Stalingrad, and they do it in the makeshift barracks among all the other troops, watching them trying to stay quiet is both tense and hot.
Remembered another one; sex scene between Jude Law and Rachel Weisz in Enemy at the Gates. They're both Russian soldiers fighting in the seige of Stalingrad, and they do it in the makeshift barracks among all the other troops, watching them trying to stay quiet is both tense and hot.
No, wait!
We're not talking the sight of Robin Askwith's hairy arse, here. There's a scene where he does a job for a posh, middle-age woman who abhors dirt. Naturally, the clumsy sod gets mucky, and she goes about trying to strip said "filthy boy" and intends to have her way with him.
More than a twitch of trouser-arousal at that one, but maybe that's just my interest in older women/domination/infantilism, etc.
In the words of Askwith himself: "Phwoar!!!"