Robosapien Dance Machine

Robert Oschler has devoted at least a small portion of his ample talents towards the development of the Robosapien Dance Machine. A complete and simple-to-use script editor allows you to create robust Robosapien command scripts that wow those who have the pleasure of witnessing the fruits of your ladder-logic labors. Completely free as open source often is, the software is infrared-based and works in Windows, although a Linux version might be forthcoming.

Robosapien Dance Machine Project [SourceForge via GadgetMadness]
Video of the robots in action [RobotsRule]