Looks pretty neat, maybe in 4 years I'll get one. Till then I ride my 6800gs into the ground (ya I'll be playing a lot of pre 2007 games it looks like).
On a side note this thread has somewhat turned into a tardgument (retarded+argument). You can't say forsure how this technology will do until it actually comes out, sure the demos look good but they definitly did that on purpose.
As for the cards integrated in motherboards, maybe it'll happen but by what I know so far it doesnt look that way. If this things handling tons of calculations it will probably get hot, so itd cool better in a PCI slot. Plus if it burned out replacing the whole motherboard would be a bummer.