Best Game Systems of All Time

Taking overall popularity, impact on culture and gaming, sales and game libraries into consideration. 

Super Nintendo Entertainment System
Sega Genesis/CD/32x
Playstation 2
Nintendo Wii
Neo Geo
Nintendo DS
Playstation
Xbox 360
Gameboy Advance
Atari 2600

>>4
I will grant, the argument could be made that either the Wii or 360 could be considered the most successful systems this generation. Which is why I included them both, and put Wii higher on the list.  I consider it similar to the 16 bit gen when both SNES and Genesis were highly successful but in different markets.  (Genesis sold better in North America/Europe, SNES sold better in japan though they both sold well everywhere)