I won't claim to be the biggest nerd, but:
1. I own over 5000 DVDs
2. I own probably twice that many books.
3. I was on usenet, Compuserve, Genie, and several hundred BBS's in 1986.
4. I had an internet account before the September that never ended.
5. I can admin a VAX/VMS and a tops10.
6. I have 35mm copies of Close Encounters, Jaws, and Raiders of the Lost Ark. (And several less nerdy movies)
7. I had my first sex at 17, so count me off that list.
8. I got a Master's in five years.
9. I can calculate the trajectory of a .308 at over 500 yards, at any wind speed, without referring to tables.
10. I've owned - Odyssey 2, 2000, Atari 2600, 5200, 7800, 800xl, 520st, 1040st, Jaguar, Lynx, Commodore Vic20, C64, c128, Amiga 5000, Nes, Snes, Game Boy, Game Boy Color, N64, Gamecube, WII, Playstation I and II, Sega Master System, Genesis, Saturn, Dreamcast, Turbografix 16, Turboduo, a bunch of systems I guarantee you've never heard of, (Vectrex anyone?) Arcade machines of Tron, Dragon's Lair, Arkanoid, Defender, and a Mame cabinet.
11. I know how to repair a FLIR.
12. My Slashdot UID is less than 500.
13. I have a large selection of plastic figures of various genre, unopened.
14. I was an Objectivist for 15 years.
15. I have every AD&D book and supplement from 1st and 2nd edition. EVERY ONE.
16. I had a cable modem in 1997. (Test market for Comcast, Canton, Michigan)
17. Too many more to list.