This was a point of debate quite a while back, so just to clarify:
http://www.greatwhitesnark.com/2010/03/25/difference-between-nerd-dork-and-geek-explained-in-a-venn-diagram/
;-)
That diagram makes it appear I can also label myself as an Intelligence, Social Ineptitude, or an Obsession. I'm taking the third one. :-)