This is for Google Chrome users only. Definitely one of the coolest things I’ve ever seen in a browser, ever. It’s highly personalized, dynamically generated, local.
Trust me on this one, it’s worth your time. Check it out: http://www.thewildernessdowntown.com/ (Google + Arcarde fire). Just don’t play to much with the windows or you’ll mess it up
When will all media be like this?
gijsbos.com 
I expect things to get much more exciting once all browsers get decent GPU support.