Hmm, lets see... thought I might as well add my own likes here just before bed. This thread got me intrigued.
Glasses seem to be a big one here, and one I have to agree with; it's only gotten something I enjoy even more now -I- need glasses, too.
Rather copy-cat of me, but yeah. Biting is nice. -Licking- is quite good too, I find... and suckling. Like someone said, very highschool, but a girl suckling on my neck when I least expect it just turns me to jelly.
A few I learnt I loved about my ex was... I don't like overly upfront girls. I like the cute and adorable... but when it comes to sex, she'd -change-. When she wanted it, she'd go from this adorable girl who wanted to cuddle up and watch chick flicks with me, to... well, a beast. Not fast, or rushed, just... mm. When she wanted it, she let you know.
I tend not to be big on the domination, but a little bit of force does it for me; up against the wall. A couple of words and some action. Never seen pants get so ruined in ten seconds flat than when I grabbed her as she went to walk away, pushed her up against the wall while she was talking, "... Honey? Shut the fuck up, and get out of those knickers.". A good, firm thigh stroke sealed the deal pretty fucking quickly.
Heavy breathing is always a good one; moaning and such is great, and -very- vocal girls are even better. But something about that heated, gutteral gasping... mmh.
Seeing her wearing one of my far bigger shirts, knowing there were only panties or nothing underneigh, and only an inch or two of fabric hiding it from me... mmm.
Half-naked scenes are good. Surprisingly erotic, just sitting around topless, kissing and cuddling.
Mutual masturbation for me is a rather big one, too; oral is nice, but something just feels -right- about it. Kind of innocent, kind of slutty... couple of sweet kisses, both idlely jerking away at each other... especially if there's panties in the way, and all you can see is a hand playing away.
I quite enjoyed some of the outdoor scenes. Once got head in a park, and touched/got touchned by a girl I was seeing in a camp tent, four of us together... friend either side trying to sleep, there we were sneakily pecking away, stroking and mumbling.
Slightly exposed skin is always good - just enough. Maybe a top which just shows an inch of flesh between hip to stomach... or neck to chest. Just enough to run a finger, or a nail across... or hook just beneath their jeans, dragging along the belt line...
Think I'll save some more for tomorrow. So I don't end up raping people with one gigantic post. =P Mew.