Via Flowing Data, a text-books-and-data-visualization mash-up using augmented reality:

It’s very pretty, but – as pointed out at FD – not particularly useful; the physical book ends up as a very cumbersome interface for data that would be more easily and flexibly displayed as a fully computer-native medium from the get-go. But there’s a hint of promise in there, too; an idea waiting for its “killer app”, perhaps. Which is state-of-the-art AR in a nutshell.