As of 1/15/09
Atari Pong (woodgrain pedestal model)
Atari 2600 (woodgrain 4-switch)
Sears Telegames 2600 (model II)
Coleco Gemeni
Atari 5200
Atari 7800
Atari Lynx
Intellivision
Intellivision II
Colecovision
Neo Geo Pocket Color
Game.com
NES (Top Loader)
Famicom
Famicom Disk System
SNES
Wii
GBA SP
GB Micro (Famicom edition)
DS Lite
Sega Master System
Sega Master System II
Game Gear
Sega CDX
Sega Nomad
Sega Saturn
Sega Dreamcast
Turbo Grafix 16
Turbo Express
3DO (FZ-1)
Playstation
PS One
PS2
PS2 Slim
PS3
XBOX 360
I'm probably forgetting something ... but that's a decent estimation of what I currently own, I paired down a lot in recent years getting rid of a lot of redundancies and stuff I was never ever going to bust out to play.