A few things that the guys I tend to crush on have in common.

• Dark hair/light eyes. I love the contrast. Though I have, on occasion, lusted after blonde haired/blue eyed guys.
• Snarky, sarcastic sense of humor. As early as sixth grade, I appreciated snark.
• Slightly taller than average, if not 6' or taller. There have been a few short ones who were cute, though.
• Somewhat longer hair. Well, as long as it's not longer than mine, we're good.
• Smart. Or, rather, intelligent. The last one was semi-well read, which was also awesome.
• Out of reach. Most are uninterested, a few have had girlfriends, and then there was one who was gay.
• More experienced than me. Relationshipionally, that is.
• Swagger. Or, well, they just have this confidence about them, and usually that translates into them being assholes.
• Skinny-to-average build. There's usually more of a range, but mostly I go for average to scrawny guys for some reason.
• Somewhat husky speaking voices.