On an athletic guy, it's hot! I buzz mine with clippers generally, and have shaved it with a razor a few times. I like it!
i used to get a really close buzz cut like a number 2 all around. i still do sometimes with the shapeup/thin sideburns and rounded in the back i usually get a 3 on sides 4 on top now but back when my haircut was real close i've had girls tell me they like the "almost-bald" type of look
I love guys that are pelon (bald headed) I love rubbing their head, it feels good and they look sexy.
See, usually i'll just buzz my head with no attachment on the razor, but if i'm not feeling too lazy, I'll get out the shaving cream and go smooth skin.