6 Most Important consoles of all time...

[The Ghost of RubangB]

Okay get ready to get really mad, here's my list:

1) Atari 2600 - for bringing gaming home from the arcade.
2) NES - for bringing gaming home from beyond the grave, introducing the concept of licensing your games and turning down the unplayable trash.
3) SNES - for creating the standard controller that's been used in everything ever since.
4) Genesis - for introducing the philosophy that every non-Nintendo console ever since has used, from blast processing to da powaa of da Cell: "Nintendo is for babies and we're totally extreme."
5) Nintendo 64 - for introducing 3-D gaming, analog controls, and FPS gaming to the masses, the Rumble Pak, and making 4 controller ports standard for local multiplayer parties.
6) Wii - for tossing out all that history and starting over, re-defining gaming as a social family-appropriate experience instead of just for basement-dwellers, motion controls, IR controls, balance board controls, speaker in the remote, Miis, the super-intuitive Wii Channels interface.

I'd put the PS2 in there, but the OP only used 6, and I consider the PS2 the most successful extension of the Genesis philosophy.