Take a video from a dancer, cut off the background with a threshold node, put every frame on a plane into a 3d space and there you go! The same works with the webcam as well, asumed you have a solid background. Driving the whole thing with the wiimote you get some pretty cool stuff. Click on the image for a video showing the composition with a wiimote.

Motion Visualisation in 3D

You can also watch this video on Youtube
Though the quality is much more worse

Here is a video that shows the process of making a basic physics simulation in SourceBinder. In the simulation, 60 spheres are bouncing on a plane. The plane’s rotation is driven by the pitch and roll values of a wiimote. The physic simulation is done with the great WOW phisics engine, for the 3d rendering we used Papervision3D primitves and the Wiimote handling is done with WiiFlash. Click on the image to watch the video.

Physics Simulation in 98 seconds

You can also watch this video on Youtube
Though the quality is much more worse