I don't know who Will Wright is, but here's an hour long presentation by him of the new game he's working on. The presentation is very entertaining and the game looks VERY cool. If you don't want to watch the whole thing, fast forward to the bits where he shows the game.
I guess that video is almost a year old. Game's not out yet and apparently has not firm release date, but I saw one projection on Gamespot that it would be coming out Q3 of 2006.
I'm not a gamer - at all. But this looks really, really cool. I'm a little afraid of it.