Most of my systems are in a good need of a cleaning, I just got them out of 6+ years of storage last month, and had a mouse nest on one NES
Odyssey 2 (Removable controllers)
Colecovision Module #1 (No Colecovision, but when I do, it's an atari!)
NEC TurboGrafx-16
NEC TurboDuo (The best system in the world, EVER! I WILL STAB ANYONE WHO DISAGREES!)
Action Max (I keep trying to stuff the funny "carts" into it but they don't fit!)
3DO (FZ-10, not 100% sure if I've ever used it)
Atari 2600 (Wood grained 6 and 4 switches, Vader model 4 switch), have a box, not 100% sure for which one
Atari 5200 in box, pretty sure it's a 4 port model but I forget and it seems to be hiding.
Atari 7800 in box, very minty looking console. Joysticks look like someone used them as a loffa
Atari Lynx (Big surfboard model)
Atari Jaguar (Very temperamental right now, stupid red screens. Still needs cleaned)
Nintendo NES (pile of VCR\Toasters, 1 top loader, not modded, one bad shape box)
Nintendo SNES (Fat snes, not sure video chip revision, and "new snes" without svideo mod)
Nintendo 64 (Almost as moody as my Jaguar)
Nintendo Gamecube (It's a purse!)
Nintendo Wii (No gamecube ports, so I cant use my cyberbike with it. Also the Wii is really the wife’s)
Nintendo VirtuaBoy (Screen seems to flicker now and then, but this is still a fun system dangit)
Nintendo Gameboy (2, one with screen issues)
Nintendo Gameboy Color (A clear purple one and I've seen a few others floating around like mice)
Nintendo Gameboy Advanced (Clear light blue)
Nintendo DS Lite (Have a red\black one with bad shoulder buttons, wife has a pink one. Course most people's wives have a pink one...)
Sony Playstation 2 - Skinny one
Sony Playstation 3 - Got for free from Juniper for certifications
Sony PSP - WHY CAN'T I DO A FIREBALL MOTION ON THIS?!
And no, I did not miss it, I do *NOT* currently own any PS1s.
Sega Master Systems (3 systems with different built in games, no Master System IIs)
Sega Genesis (Models 1, 2, and 3)
Sega CD (Model 2)
Sega 32X
Sega Saturn (First model)
Sega Dreamcast
Sega GameGear (Needs cap's replaced)
Sega Nomad
Microsoft Xbox
Commodore 64 (Old style box and 64C)
Commodore SX-64 (Portable C64 gaming goodness)