Dance of the Robots...

These are industrial robots – by far the most common kind of robot, though many people have never seen one before.  They come in many varieties; this one is a general-purpose type that can be fitted with many different tools at the working end.  Someone with far too much time on their hands put this together.  I don't care much for the music, but I find the idea of choreographed robots fascinating...and strangely attractive: