I'm a huge fan of this little device, It's basically a glimpse on the future of computing.
Imagine atrix-like devices where you can just carry around a core system in your pocket, it scales down to the smaller screen and you can do all kinds of activities on it. Plug it in to an dock and get a full desktop. Imagine work computers like this.
Also once windows 8 comes out, I see ARM really taking off. A system like this is already pretty much what 80% of offices really need for everyday tasks. A few additional connectors are naturally needed (plus practicality).
Imagine $60 or even sub-$50 office computer cases (Or small computers that you can carry in the pocket) that eat under 10 watts of electricity and run a full windows desktop. (Yes I know that ARM and x86 apps aren't compatible, but they are porting office over).
This time computing gets personal again, it's probably your own phone that powers your work-desktop in the future.
Sorry for the "market speech", but I am just so excited myself.
ARM is the future, plus it runs quake3.