O.K. folks, this is pretty cool! And Dr. Eberle promises me that there are some decent educational/training applications for this!
An augmented reality map of The Wizarding World of Harry Potter - http://www.harrypotter3d.com/
You will need to print the map and follow the directions at the site (need a Mac/PC and webcam).
More about this marker-based technology at - http://www.vizworld.com/2010/01/augmented-reality-map-wizarding-world-harry-potter/
And here's an interesting application for the retail clothing world - http://www.techcrunch.com/2009/06/23/zugaras-augmented-reality-dressing-room-is-great-if-you-dont-care-how-your-clothes-fit/
I will post this at our IDT Ning site and we can talk about it more! - http://idtesu.ning.com