I saw a semi-pro (real life boyfriend/girlfriend, doing for-profit porn) scene a while back that was great in several ways, and very unlike what the porn industry produces. I think the industry could learn a lot from watching what a guy/girl can do on camera if they actually have chemistry, instead of just doing a paint-by-numbers collection of fetishes.
The first great bit was, after some great action with real chemistry and both of them clearly being into it, the guy pulls out after some intense, lengthy missionary fucking and immediately jerks his load all over her stomach and tits (impressive volume and distance). Neither of them said ANYTHING (not even grunting) before/when/after he came. NO yelling or big production -- he just paused the pussy-fucking-action for a second because he was ready to cum right then and there. NO director telling her to sit on the X mark on the floor, face the camera, keep her mouth open, look pretty, and be sure to swallow all of it -- she just relaxed on her back (breathing fast but not loud) and waited approvingly for his gusher to subside.
Then, here's the next great bit, she looked at all the cum that was splattered on her (very young, very skinny, and very tanned) body, and with both hands, she rubbed it all over her tits, stomach, and pussy, like she was oiling herself down. Her whole front side (eraser-tip perky tits and tight abs heaving intensely from her breathing) was wet and shiny and she obviously thought it looked as sexy as I did. That's the way a guy should cum, that's what the girl should do with it -- NOT stick her tongue out to show the guy's cum close up to the camera.
The last great bit was during her rubdown her boyfriend put his cock back in her pussy and really seemed intent on thrusting harder and faster, like a distance runner seeing the finish and going for it -- he was going to fuck that pussy gooooood. After she finished oiling herself up she asked "when do you want to stop?" (since he'd already cum, it seemed time to start wrapping up the scene), and his short-of-breath answer was, he wasn't going to stop until she'd cum a second time (her first orgasm was near the beginning when he was giving her oral). So she laid back and focused on rubbing her pussy as he pounded her to the max -- with her on her back and her skin glistening wet, soaked with his cum. Obviously, with the chemistry they had, it was one hell of a hot way to finish, as over the next several minutes of all-out-hard-fucking she neared and finally reached orgasm. By the time the scene ended the cum on her skin had dried, but she had some sexy sweat on her chest and forehead (and he was probably dripping some sweat on her as well). They both looked pretty exhausted and were nearly speechless by the end -- after she had cum the second time she was just quiet and satisfied. His brief, final comment as he stood up, cock still hard but his face looking completely spent, "OK, that's good" made me laugh for some reason -- I guess he was too exhausted to think of anything better to say at the end. He'd left it all on the field.
So, to sum up what the "professionals" should do to make porn better:
Good, hard, enthusiastic sex leading to a must-shoot-huge-load-now, didn't-have-to-wank cumshot, simply emptying his balls all over her body, with no melodrama.
The girl getting oiled-up-with-cum and continuing to fuck the guy after his cumshot, with no rehearsed show-cum-to-the-camera bullshit or halting the action right after the cumshot.
After he cums the guy is still up and fucking the girl for the purpose of making her cum hard at the end, instead of "where's my paycheck" attitudes from everyone involved.