Yesterday around midnight I wanted to test my programming skills with an easy excercise. Conway's game of life (http://en.wikipedia.org/wiki/Conway's_Game_of_Life). I chose JS and HTML5 canvas cause it's fairly easy to use and share.
Here are the results: http://jsfiddle.net/vqBE4/18/ & http://jsfiddle.net/S8gju/
Found it quite fun and easy to read your code, good job :)