Just watched the Microsoft promo trailer for Project Natal and think it's amazingly cool.
I know, saying anything from Microsoft is amazingly cool kind of leaves you open to a barrage of criticism, but hey, you tell me. Take a look at the Natal video and tell me it doesn't look great (providing it does everything you see here).
And one thing you'll notice right away -- there are more scenes in the video that involve the family, or some kind of social communication/co-operation.
Could call it a MicroWii Xbox.