That's really cool, thanks for the post.
Javascript games are going to become very popular someday since no plugins are required to play them, all you need is a browser. If you can make a game or app in Javascript, it will work on the PC, Mac, iPad, iPhone, Android phones, Linux Operating systems etc. Now that these types of tools are coming out it's easier than ever to make games. I've written some basic ones by rendering to the HTML5 canvas element for fun and it was very easy to do, but it still has a ways to go.