I agree with Fantabulous about the natural look. Even generally speaking, I tend to find guys who are just kinda cute when their hair is all gelled and spiked ridiculously hot when they don't do anything to their hair.
"It's a funny contradiction, so little attention (or perhaps interest) in clothes and so much focus on hair."
There's a pretty simple explanation for that. I don't think most of us want to imagine Adam without his hair, whereas...
*wonders why halo is suddenly red and pointy*
"There was this one time an alarm went off - it was in the middle of '24.' That's just wrong. Everyone knows everyone was watching '24' at that time."
--NYU student quoted in the Washington Square News about students ignoring the frequent fire alarms in dorms