Consoles:

-Mega Drive
-PlayStation
-Dreamcast
-Playstation 2
-Xbox 360
-Playstation 3

Handhelds:

-Game Boy
-Game Boy Advance
-DS
-PSP

NES
Nintendo 64
Nintendo Gamecube
Nintendo Wii
Genesis
Sega CD
Sega Saturn
Sega Dreamcast
Sega Gamegear
Gameboy Classic
Gameboy Pocket
Gameboy Advance
Gamebody DS/Nintendo DS
XBox
XBox 360
Playstation 1
Playstation 2
PSP (at one point, sold it)

An old console with pong and 3 other similar games
Intellivision + "Computer" expansion (now only the Intellivision is left, it's at my sister's, some son of a b#§ch stole the expansion at my cottage).

Edit: I just remembered that I had two single unchangeable game handhelds, one with Space Invaders, it had a red LED screen, the other was a crappy game with a chicken laying eggs, I didn't choose it, most probably it was the surprise in a chocolate Easter egg, I don't remember exactly.

After I switched to computer gaming, first a Sinclair Spectrum, after PC's and I'm still a PC gamer, I think only Wii will eventually make me get another console, but not at the current price.

Tandy-TRS80 1988
Vic20 1988
NES 1989
Gameboy (brick) 1989
Master System II 1990
Megadrive\Genesis 1991
32X 1995
Sega Saturn 1997
PS1 1998
Dreamcast 2000
Gameboy Advance SP 2003
PS2 2003
Xbox 2004
Xbox 360 x 2 (1 for playing HD video\audio streaming from NAS) 2006

All sold except Xbox 360\Gameboy Advance SP\

• Sears Pong
  
• Intellivision
  
• NES
  
• Genesis w/32x
  
• PS1
  
• N64
  
• PS2
  
• Saturn
  
• Gamecube
  
• Dreamcast
  
• Xbox
  
• Xbox 360
  
• PS3
  
• Wii
  
• PSP
  
• Game Gear
  
• Every version of Gameboy
  

SNES
Saturn
N64
PS1
Dreamcast
Gamecube
PS2
Wii
PS3

Telestar Arcade (pong) = sold
Atari 2600 = died
Microvision (handheld) = sold
NES= sold
Super NES = sold
Sega Genesis = sold
Lynx = sold
Gameboy = sold
Gameboy Advance = sold
Gameboy SP
Nintendo 64 = sold
PS1 = sold
PS2
PSP
PS3
Nintendo DS
Xbox 360

Nintendo Wii - Moving to my oldest son's house soon :(

Colecovision - stolen
Commodore 64 - sold
Gameboy Advance SP - sold
DS Phat
DS Lite
Wii

NES - sold
Mega Drive - sold
SNES - now my ex-girlfriend has it
Game Gear - gave it to my little sister
N64 - still have it
GBA - quickly sold it when I realized it was just a way for Nintendo to sell old SNES games for a second time (not a single original Mario game!)
Gamecube - still have it
Wii
DS

Xbox-still have
Xbox 360-still have
N64-sold
Gameboy-still have
GBA-still have
DS-still have
Gamecube-still have