Just caught a news article tonight here at work in my RSS feed about this. Mozilla has been developing a HTML5 game based on Node.js and WebSockets. Has anyone gotten to look at this yet? I'm looking forward to getting off work in a few hours to go home and play around with this as it seems pretty cool. I know quite a few people here are currently working on / interested in bringing parts of their games into the browser, so hopefully this will be a nice piece of software to learn from and build further on.