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

The xbox360 has sold nowhere near what the Nintendo Wii has, and lags behind even in software sales, no matter what Microsoft  propaganda you read.

Games sold worldwide:

1. Wii - 791.34 Million
2. Xbox 360 - 640.38 Million
3. PlayStation 3 - 551.68 Million
4. Sega Saturn - 47.34 Million
5. Mega CD - 1.96 Million