I hate using the word "nerd" because of how overused it is nowadays. I'm into science fiction and fantasy, I still have every video game system I've owned since I was four, and my comic book collection is approaching "personal library" territory...nearly all DC with a handful of Marvel.
I have a stereotypical Steam account: 42 owned games, 22 I've played at some point, 9 currently installed. My PS3 game collection is even more ridiculous.
So I'm a power dork.