This is an awesome idea. I hope the execution is just as good. (I’ve linked to the MindHacks article because the original site plays noises at you.)
Michael (who comments here a lot) lent me a book on educational videogames, which I have yet to read, but am looking forward to. Educators can learn a lot from the cognitive psychology principles involved in videogame design. I had a conversation at lunch today with a fiction writer who is trying to get into manga, about how science fiction writers complain that no one is interested anymore. The popularity tells you where people are at. And how to reach them.