Seems Like the new Nintendo Wii remote control can be used as a mouse input device on PCs, there info on linux use here newbielink:http://www.wiili.org/Wiimote [nonactive]
From seeing clips on YouTube, looks like it functions like the GryoRemotes and mice.
Since these remotes are about Â£30 they couls be a very nice controller for the new UI2 .
The Wii is released in the Uk tomorow and i should be geting one on release day, all being well. So i'll have a play and see what can be done.