EDIT: DANG at the scores!!! KT - very impressive. I saw the stuff about economist and I knew you were going to be up there. I expect our moderators to be profound geeks!
i am 21% so i am just a geek and not somewhere beyond
but i steer away from fiction books and shows like lord of the rings and the star trek stuff, or computer games, and favor technical and scientific books or websites
to me a geek is a math/physics/computer head more than an escapist who likes fiction and role playing games but it's all in the eye of the beholder
It's part of the way your % chance to hit is based, assuming the target has at AC (armor class) zero. It's varied from there depending on the target's actual AC.