The guys at Laan Labs came up with a novel way to record 3d data from the Kinect then play it back as a 3D augmented reality video on the iPad using the String SDK. It plays on the strength of both devices. The ability of the Kinect to cheaply, easily, and accurately generate 3D data, and the iPad form factor that makes it easy to move around in space to view the 3D image from different angles.
Here's their demonstration of the system:
In addition to the possible applications for the technology mentioned in the video clip, we think that there are also a number of robotic applications that can be developed. It will be interesting to see how this is put to use.