Personally I think that the metro interface is actually fairly useable as a 10-foot interface, except the mouse doesn't translate the best.

What I was thinking was to either use either a kinect or a wiimote hooked up by BT to navigate around (once the required software is available)

Kinect: requires no controller; allows for more complex gestures

Wiimote: cheaper, and i think more precise; as you use it as a laser pointer. al you have to do is rotate it slightly, while the kinect requires larger hand movements that the camera can track. also has buttons that can be tied to shortcuts.