That Kinect you bought for your Xbox 360? More than just a game controller, it's a bonafide hologram generator! In the clip below, UC Davis researcher Dr. Oliver Kreylos demos the process. The fun stuff begins at the :44 mark.
Kreylos explains, "By combining the color and the depth image captured by the Microsoft Kinect, one can project the color image back out into space and create a 'holographic' representation of the persons or objects that were captured."