Pierre Villeneuve writes about his Dancing Lego robot project:
Its based on my Raspberry Pi, five servo motors, and Lego parts stolen from my son’s collection. The robot dances to some pretty groovy music, and there is a special appearance by Lego Batman.
In addition to the Pi, he uses a hardware 16-channel 12-bit PWM controller board from Adafruit to interface with the five servos.
For more info and source code visit Pierre’s Smoked Bits website.
Via the contact form.

I’ve never seen Lego used in quite that way before! How innovative …
Thingy with a wheel is a truly groovy. But thingy with 3 hands (or legs?) sucks as a dancer.