Conway's Game Of Life in script, coded in the cloud. http://en.wikipedia.org/wiki/Conway%27s_Game_of_Life
See http://www.movereem.nl/conwaysscriptoflife/ for a live running example.
Mandelbrot fractals, created with Canvas. http://en.wikipedia.org/wiki/Mandelbrot_set
See http://www.movereem.nl/mandelbrot/ for a live running example.