Good Game Recommendation Threads you should check out.

[radioioRobert]

Here are a few of the platforms I feel should have a link/thread.
Not sure if there would be enough interest to link to Atari, Coleco, etc in consoles past. If there is I'll add those as well.

Microsoft XBox

Nintendo Entertainment System (NES)
Nintendo Gameboy
Super Nintendo (SNES)
Nintendo 64
Nintendo Gameboy Advance
Nintendo Gamecube

Sega Master System
Sega Genesis/Megadrive
Sega CD
Sega 32X
Sega Saturn
Sega Dreamcast

Sony Playstation (PS1/PSX)
Sony Playstation 2

TurboGrafx-16 / PC Engine