If you are looking for a low cost, full scale & open Virtual Desktop / Application delivery solution (like VMWare has with it's VMWare View's VDI), there's an open source project that should catch your interest. It's called Ulteo.

Last month the first official release was launched, bringing you the option to push Windows and/or Linux based desktops and applications to end users through a web browser.

Read about Ulteo's first official release and more:
Ulteo releases the First Version of its Open Virtual Desktop (OVD)...

The last two months I've been following developments on the Moblin project with great interest.

Moblin 2.0 (in Beta at the moment) has the so called 'Clutter interface' as it's base. This interface makes it easy for users to get optimal Internet and multimedia use out of their netbook.
Originally this project was started by Intel and this year they have opened it up and placed it in the hands of the Linux foundation (http://moblin.org/).

Amongst others, bootspeed, optimal use of screenresolution and power consumption ..