For all those lost in the search for a scanty Raspberry Pi, don't forget to download and try the Windows 8 consumer preview. It is the next level of OS HMI connectivity. Microsoft has ushered in the "Metro" style navigation in Windows Phone to the next incarnation of Windows.
Geared towards tablets and multitouch desktops, I am on the fence on how useful the interface is for a single mouse pointer. Easy access common applications are handy, but are they necessary? All in all, I am impressed with the preview. Give it a shot yourself here: http://windows.microsoft.com/en-US/windows-8/iso
Update: It appears that the Raspberry Pi does not meet the requirements to run Windows 8. How unfortunate. (Min specs 1Ghz CPU, 1GB ram)