*Pretty classy, for a Kinect hack.
Flexpad: Highly Flexible Display Interactions [short version] from Fluid Interfaces on Vimeo.
http://fluid.media.mit.edu/projects/flexpad
"Flexpad is a highly flexible display interface. It introduces a novel way of interacting with flexible displays by using detailed deformations. Using a Kinect camera and a projector, Flexpad transforms virtually any sheet of paper or foam into a flexible, highly deformable and spatially aware handheld display. It uses a novel approach for tracking deformed surfaces from depth images in real time. This approach captures deformations in high detail, is very robust to occlusions created by the user’s hands and fingers and does not require any kind of markers or visible texture..."