The difference in the Kinect sensor apart from a normal camera is that it captures z-information, allowing you to use the scene in three dimensions. This allows you to affect each three dimensional point in space.
Body Dysmorphic Disorder from flight404 on Vimeo.
Fat Cat from flight404 on Vimeo.
These were coded with the open source framework Cinder. Cinder is a visual framework written in C++ and can be used for creating visual apps of all types.
Dueling Kinects from flight404 on Vimeo.
Two Kinects running at the same time. Each depthmap is compared and the closer value is kept. Allows for the creation of mutant hybrids, arms coming out of stomachs, etc.