Nokia N800
From LinuxMCE
Price: about $400
Nokia N800 works pretty well as a LinuxMCE Orbiter. Its WiFi is much more stable then the Nokia 770.
The Orbiter package and all dependences can be found in the Maemo garage, for information on how to use it read "Using Nokia770/N800 as a Plutohome Orbiter" on the smart home blog.
See also: