To me, a geek is somebody who cares more than the average people expect them to care about something, or more than average people care about that thing. And, I love that, because I'm a geek with a lot of things if that's the definition. I care about a lot of things more than most people do. And, I love that definition. I think it's a wonderful thing to care. - Marco Arment
I agree with Marco wholeheartedly.