This is craziest thing I've seen in long time. Linus Åkesson (lht) made crazy demo running from a microcontroller based on the Propeller chip from Parallax. External I/O consists of stereo sound (at line level) and a VGA signal. 32 bit processors, 48k of ram. and 32k rom. The Propeller is used in many industries including manufacturing, process control, robotics, automotive and communications. I got two left hands and I suck with soldering iron, but I really admire folks who are into electronics. If you want to try Parallax out, you can get Parallax demo board and download the eeprom file of the demo and try it for your self.
Checkout Turbulence by lft:
(turn on your speakers because music is great!)