UPDATE: Now shows separate browser on each face! (a fast PC will help 🙂 ). Click a face in “browse” mode to select it and change the URL (or interact with it). Source code available on CodePlex (see related post).
If you prefer you can run the application locally instead (ZIP here).
For more examples, and an important note about VS2010, be sure to check out Sacha Barber’s related post 🙂