Skilled dancing. Not the booty-bump-and-grind stuff, but grace, coordination, and style. Ballroom, club, or choreography, if it's done well, it's downright painfully sexy to me.
Tasteful clothes on artfully-sculpted boys. Because, yes.
I've decided to admit my weakness for longish hair on my men. Not long-long hair and not on every man, but yeah. Layered, good for grabbing, sexy, lustrous hair.
Some skill with a blade. *g* No, really, all Medieval sports from archery to swordfighting. Guh.
Denim is a blisteringly cool and versatile fabric. Jeans please, well-worn and low-slung over the hips. Big bonus points if that means showing off that vee of pelvic bone I love so much.
Performing. Onstage or dancing in a club, just grooving to the muzak in line at the grocery store and even doing the routines in my aerobics classes, I like doing things well and being noticed for that.
Good writing. The less I say about how much I worship good writers, the better.
Leather is nice. Leather pants are proof that God loves us and wants us to be happy. *nod* Thanks, Ben.
Seconding
Mouths. Little bit of a fixation there. Full bottom lips, especially in the glossy end of the lip stuff spectrum. And speech. Basically, pronunciation that is somehow stylized is hella sexy, whether that's just precision or accent. Not specifically but while we're there, I love Australian and southern England English, though the trace amount of redneck within me appreciates a genuine Southern drawl, too.
Confidence is always a turn-on. Just being sure of what you're doing because you're doing it is sometimes enough to do it well.