I love this video, which shows a Clutter UI for sorting through a pile of photos. It's reminiscent of the demos Microsoft has been showing at MTech and elsewhere of the Surface UI (read: 'fern bars with Windows Vista logos').

http://www.youtube.com/watch?v=AYGp6iBmCyM&eurl=http%3A%2F%2Fwww.technology-included.co.cc%2F2009%2F04%2Fmoblin-clutter-interface.html&feature=player_embedded