Ravenclaw. I'm not brave enough to be a Gryfindor, as far as I know; haven't really had much chance to prove it, I'm not as cunning or arsehole-ish as a Slytherin, and not plain or boring enought to be a Hufflepuff.
I've been told I'm very clever for my age, though, so I guess out of the main house traits Ravenclaw would be the one for me.