Chua Circuit
scholarpedia.org
scholarpedia.org
Here is a video, sounds generated by Chua's Chaotic Oscillator: http://www.youtube.com/watch?v=vGQi9GCWRY0
Another article "Chua's Oscillator in Musical Applications" with sound clips and oscilloscope images: http://jamesnsears.com/archive/ecechua.htm
Chua's Oscillator as a syntheziser, a mysterious silver box with one knob: http://1010.co.uk/org/shop.html#sec-1.2.4
I think this is very cool!