Yahoo! Trail of Tiles :: Interaction-lite

This got well tweeted but I'm interested in how long this will seem impressive because I've seen so many great bedroom kinect hacks already that this combination of recognition and play-lite seems slightly old... I mean, old within the sense of being three months and subsequently dated (so not really) - but what does it do? apart from a flashy interface for some visuals?
I suppose the question is, if you had to use a mouse woud it seem so cool?
Is there interaction beyond an physical interface?
Kind of hoping so and I missed it :