In the comments much discussion whether the PS2 deserves to be there ahead of the Xbox 360. I agree with those who say the 360's online portion was the kicker.
My list of important (though not perhaps decade-defining) devices or technologies would add:
- LCD/Plasma HD TV
- DVR technology (embodied in their list by the Tivo)
- GPS navigation systems
- Satellite Radio (which will become more important and profitable after Obama recreates the Fairness doctrine)
- Flash Memory
How about yours?