I can find either men or women attractive, but there has to be something so incredibly fascinating about such folks that I can't turn away. The first time I saw Catherine Zeta-Jones on screen I had a serious girl-crush on her. Today, I saw a girl who probably was average in the looks department and heavier than the average girl, but her hips and waist ratio were fantastic (large mama hips, tiny waspish waist). I'm straight, but I wanted to scoop her up by her waist, just for fun - she was that adorable!
As for men, I can find all sorts of parts of them interesting. If they're larger men, I love the physique and face of John Goodman in his "Roseanne" days and I love the absolute adorable eyes, intensity, and demeanor of Alfred Molina (Doc Ock from Spiderman 2). I've also been attracted to classic pretty boys, like Matt Damon, Paul Walker, or Brad Pitt (in his earlier years). I also like very unusual looks and quirky looks (ala Adrien Brody) or brooding, sad eyed men (like Colin Firth, Stephen Rea, or Gabriel Byrne).
All that to say...there isn't really one guy with one look who blows me away. It's usually parts and pieces of a whole: Eyes, lips, cheekbones, crooked or hawkish nose - etc.
Man. I think I need a date.
Also? There are certain outfits that I really appreciate, and sometimes the woman (it's always a woman; I don't pay much attention to a man's outfit) has such a fun, unique, perfect outfit that I can't help but stare, and wonder if I can recreate it.