I have a huge weak spot for the more badass, sometimes tomboyish girls. I have gigantic crushes on Faith from Buffy and Shane from The L Word. NOT scary, she-hulk, super-butch girls, mind you. If I liked masculine, mannish things I'd be straight. I like girls that look like girls. Just... more badass, independent, and punk-ish than the blonde airhead type.
A laid-back, casual attitude, dislike of drama, and good sense of humor are huge pluses, too.
A laid-back, casual attitude, dislike of drama, and good sense of humor are huge pluses, too.