Hmm well nerdy to me would have to be the whole stereotype... so:
WoW, dodgy clothes, computer-obsessed, gamer, anti-social, grade rocking etc.
I mean, Seth Cohen (yay education via OC) seemed a bit geeky to me
and he was gorgeous and sweet. Then again he had an awesome character, was played by an incredibly hot actor and had the benefits of good lighting, a script etc on his side.
I haven't met many people that fit my "nerdy" classification though. So maybe I just don't consider people nerds like others would :S hmm haha