I really dig the end result of this hack. Using Quartz Composer and TUIO, this project dubbed "Stretchy Lines" has came to life thanks to that handy depth sensing wonder toy Kinect. The setup includes a Kinect perpendicular to the table. The TUIO Server detects objects within a specific range, and then a calibrated projector draws random lines around the objects detected.
TUIO sends objects coords using OSC protocol to Quartz Composer, and then the graphic is rendered using custom Quartz Composer patches.
Since this sketch doesn't exactly have an official name - aside from Kinect Experiments - I thought I'd give it one myself. The Kinect Visual Effect Generator is a multipurpose Kinect Hack written in Processing. This Processing Sketch allows an end user to apply a wide variety of different visual effects and options such as the ability to follow your actions and have the repeat to drawing tubular like trails that are represented in 3D with depth and with rotational functionality.