I voted the speakers.
Computer chair is nice, but idea is not new.
Electric bicycle looks cool, but technically (range/speed) it sucks. Damn, for 8k I can buy a Tour De France-level bicycle (top of the line, best road bike you can imagine).
I-Theater - old ass idea, been done ages ago.
Night sleep gadget is pretty cool...
Vinovault - dunno, I don't drink, and tech is quite simple. But idea is great.
Robot guitar - I don't play guitar, can't comment
Fountain - bleh
Sony small PC - will be outdated in couple years
Eye-Fi and Transporter are nothing special or new. Altough I admit, concept of eye-fi is pretty cool.