Following up on the discussion about programming languages, I wanted to share with you a demo made in Haskell (demos are generally written in C, C++ or even assembly language).
The demo is called Mrs. Pavlov here tells me that she is a polytoxicowomane and it's been programmed in 2008 by the group A moiré misszió bemutatja. I love the Philip Glasseque music and the overall design of the demo and I hope you will enjoy it too.
I advise you to download and run the binary on your PC or your Mac as it's really much better than the online video.