Tastes vary as much as people do, so. My ex, for example, liked fairly hairy guys (win!) because she's into manly men. However I also know girls who hate any body fuzz at all.
So my guess is that this what your average girl might like:
- muscles, but not ridiculous ones. Broad shoulders will do you favours, as will a firm belly, but noone wants a dude with muscles the size of his head.
- most don't like an overabundance of body hair.
- most women seem not to be keen on beards, but like a bit of stubble
- good smell
- some fashion sense, but not anything toward ott glam territory.
- if long hair, then good condition, not greasy etc - otherwise, short hair
- a decent chin/jaw
- a decent bum too
- a nice smile, but not too smiley - men who grin constantly seem a bit dim, apparently
- good skin
- a sense of humour
- confidence, but not arrogance
I'm fairly sure that most girls reading that will be nodding at most of those points. I've kept things deliberately vague to avoid excluding people.
I'm fairly in touch with my anima and I actually talk to girls about these things occasionally, if anyone is wondering how I know. http://en.wikipedia.org/wiki/Anima_and_animus