It is damn cool. If I had a wireless connection through my house, I'd buy one of those.
As cool as this is (and the liquid cooling the new G5s have), I'm interested in the rumored huge displays coming out from Apple. Supposedly they have a 30 inch version with DVI instead of their ADC stuff. Add this to the recent upgrade the powerbooks recently got (ATI 9700 graphics with CPU bump) and it looks very tempting to become an Apple consumer.