Since I was little I've always been interested in computers (and more often than not, playing video games on them!)....
I try to record everything I collect in my videogame database (for more info, see here).
Things I own or collect are are:
Acorn, Amstrad CPC, Amiga, BBC, Dreamcast, Jaguar. MegaDrive, NDS, NeoGeo, PC-Engine, Saturn, SNES, Spectrum, Vectrex, Xbox.
I'd like to get my hands on a MSX (or the FPGA re-implementation; the One Chip MSX) and possibly a Gamecube or Wii once the SD or USB based storage is sorted out.
A couple of things to note;
1. The two newest systems I own are a Nintendo DS Lite (released 2006) and an original Microsoft Xbox (released 2002).
2. The two oldest systems are the vector screen based MB Vectrex (1982) and a Pong clone by Grandstand.
3. I don't have any Sony consoles at all.
JAMMA Supergun unit (not online yet)
Minimig Laptop (Currently in-progress. Youtube video of the initial concept here)