I just discovered this incredible art piece by the artists group greyworld: The Source. An animated cube of 9x9x9 (729) indipendly moving balls in the London Stock Exchange building, up to 32 meters high!

There is more documentation and press coverage here:

www.londonstockexchange.com
www.junction.co.uk

Its interface is also very nice, programmed by James Tindall from atomless.com. Have a look at it here.

I'm quit speachless.