I won't touch any new interface technology until I see the proof that it is all they'd like us to believe it is.
You want intent to purchase? I want proof that it works.
I think Microsoft's got the right idea with the Natal camera, infrared beams, etc.
I think the idea that it will be perfectly flawless and able to read my motions without issue is completely batshit insane. I think that if anybody were willing to plop the cash for either system without experiencing it first is completely retarded.
Fortunately we know they'll have demonstrations everywhere when they want us to buy it. Neither of these companies is a slouch when it comes to marketing.
Although Sony proves itself to be fucking nuts at times.
I'm eager to see what the future holds, but I'm not paying money for anything until I see what really comes around.