I still have my ancient Mattel Intellivision :-P (dunno if it's still working though)

Still have all that I own.
SNES -With super Gameboy
Retro Duo,
Sega Genesis,
N64
Gamecube -with GameBoy player
Dreamcast
PS1 ( I believe I still have it, don't know were though.)
PS2- Makes PS1 poinless anyway
Wii,
Gameboy color
Gameboy Advance
Nintendo DS lite
Atrari ( don't know what version)

Let's see:
2600
NES
Genesis w/32X & Sega CD
SNES
PS1
N64
Saturn
Dreamcast
PS2
Gamecube
Xbox
Xbox 360
Gameboy Pocket
GBA
GBA SP
DS Lite
Is that enough? :)

Wasn't the NeoGeo great? Did you get the NeoGeo collection disc for the ps2? The Samurai Shodown disc was great too.
I'm debating selling, too and just holding on to my survival horror and a few favorite RPGs. Did you sell the complete collection or as individual pieces? I figure I could probably get more money as individual pieces.
I have all the Atlus games and Squaresoft (pre-Square-Enix) and Working Designs (collector's set) games for ps1, which incidentally, seem to be worth a fortune. I love the Square and Working Design games, but I haven't played them in years and I have my eye on a condominium.

The Neo Geo rocks!!!
LOL ...PS2 is one of the only consoles I've never owned, so I don't have the NG collection.
I'm pretty picky with the look of games on old consoles so re-releases on other systems don't normally do it for me.
Pretty much just got the Neo Geo for Metal Slug. Only had three games (all MS) when I sold it. Sadly, sold the whole lot as a package. Don't remember exactly how much for, but it was criminally low. But I needed money quick and thought I could do without the Neo Geo (and a collection of vintage synthesisers which I was most pissed about in hindsight.)
Sell everything seperately if you can, you'll certainly get more for it.

i've only got a gameboy colour o.o

None with me, but I have an Amstrad CPC 464 in storage in the UK.

I see a few North American active forum members mention Amiga 500's.
I'm quite taken back as I thought Commodore only really took off with it's Vic20/C64/Amiga in Europe (in the UK the Amiga was the be all and end all of home computing (no offence to any loyal Atari users of the time)).
Sadly, piracy was more rampant than the black plague in the UK on the Amiga.

i'll include the newer systems in this list
Atari Super Pong
Atari 2600
Intellivision
NES
Genesis (with 32X)
SNES
CD-i
Virtual Boy
Gameboy (original grey brick model a couple dead pixels but it still works)
Game Gear
Saturn
3DO
N64
Neo Geo Pocket Color
GBA (original and SP)
Dreamcast
PS2
GCN
Xbox
PSP
Xbox 360
PS3
and i also have games for systems i don't own yet (Master System and Jaguar) because i find them at rummage sales dirt cheap and i eventually hope to find the systems cheap some day as well
i used to have a PS1 but sold it because of the PS2's backwards compatibility... if the 360's backwards compatibility was more complete i'd sell my xbox but i seem to remember hearing that they weren't going to put any more effort into backwards compatibility on the 360

My wife still has her original NES and original Gameboy. I still have a Sega and Sega CD lying around in a box somewhere, and my Dreamcast is still hooked up to the TV :D

Good move. XB360s backwards compatibility is, quite frankly, terrible. PS2's is excellent, but there are a few games that aren't compatible and they're some of my favorites - Xenogears, one of the FF collections (I forget if it's origins or the other one).

I still have my Megadrive that my dad bought me for my 7th birthday, it still works perfectly. I've got a MegaCD kicking about the house somewhere, i have no idea if it works or not though.

Hmm..
Atari 2600 (x3)
Atari 5200
Atari 7800 (x2)
Odyssey (pong)
Odyssey 2 (x2)
Intellivision (x4)
ColecoVision
RCA Studio 2
Atari Lynx
Sega Game Gear
Atari Jaguar
Sega Master System (x3)
Sega Genesis (x2)
Sega 32x Extension (x2)
Sega Power Base Converter
TuboGrafx 16 (x2)
Turbo Duo
Nintendo NES (x11)
Nintendo SNES (x2)
Nintendo 64 (x3)
3DO (Panasonic)
Sony PlayStation 1 (x4)
Sony PlayStation 2 (x3)
Sega Dreamcast (x3) *** Favorite Console ***
Sega Saturn (x3) *** Second Favorite Console ***
Microsoft Xbox (x2)
Nintendo GameCube (x2)
Microsoft Xbox360
Sony PlayStation 3
Nintendo Wii
Nintendo Gameboy Classic
Nintendo Gameboy Color
Nintendo Gameboy Advance (x2)
NeoGeo Pocket Color
WonderSwan
Nintendo DS (x2)
Nintendo DS Lite
Sony PlayStation Portable
GamePark 32 BLU
There are probably a few more.. but my brain is fried :)
Oh yeah, two variations on the SegaCD as well.

And here I thought I was the only one that still cherished his Saturn :)

SNES, Dreamcast, N64, and I had an Atari I never used since it isn't even remotely functional.