My female crushes are different but there are some main trends:
A certain kickass, almost masculine quality Katee Sackhof, Eliza Dushku, Rachel Griffiths, The lesbian girl at my video store who looks like Rachel Griffiths Yelena Isinbayeva (the pole vaulter, I want her!)
Thin and waifish: PJ Harvey, Charlotte Gainsbourg
Beautiful natural boobs: Rosario Dawson, Carla Gugino, Monica Belucci
I'm sure there are others but I can't think of them right now. But it's all intellectual. I have not had sex with a woman in any form and although the idea of it doesnt' gross me out, the reality did. Perhaps it was the woman