Atari Video Music
Atari 2600 (three or four versions)
Atari 5200 (2-port versions)
Atari 7800
Atari assorted 8-bit computers
Atari STFM
Atari Portfolio
Atari Lynx (both models)
Atari Jaguar (with JagCD)
Timex Sinclair 1000 and 1500
Intellivision (Model 1 and 2 along with ECS, Intellivoice, and Intellicart)
Colecovision (4 units, only 1 working)
Odyssey2
Vectrex
TI-99/4A (with loads of gear like PEB, MBX, etc.)
Commodore VIC-20 (no power supply)
Commodore 64
TRS-80 Co-Co (model 1 and 2)
Apple IIc (no power supply)
NES (three consoles, all blinking)
Nintendo 64
Nintendo GameCube
Nintendo GBA SP
Sega Master System (both models)
Sega Genesis (all three models, 32X, and model 1 Sega CD)
Sega Game Gear
Pioneer Laseractive (with Sega Mega LD module)
Sega Saturn
Sega Dreamcast (regular and black Sports models)
Telegames DINA
Philips CD-i
Memorex VIS
Action Max
ViewMaster Interactivevision
Commodore Amiga 1000 and Amiga 1200
TurboGrafx-16 with CD-ROM drive
TurboDuo
3DO
Neo*Geo Pocket Color
Tiger R-Zone
Nuon DVD players (Toshiba SD-2300 and Samsung N501)
Sony Playstation
Sony Playstation 2
Microsoft Xbox
Microsoft Xbox 360
Nokia N-Gage QD
Tapwave Zodiac
Gizmondo
Xavix GamePort
I'm sure I'm probably forgetting something. I didn't list things like Famiclones and stand-alone units, including Pong consoles.