This is a clone of the Idlewild Boat Race screen saver implemented in Javascript.

http://en.wikipedia.org/wiki/Windows_Entertainment_Pack

You can see this guy in action here:

https://dl.dropboxusercontent.com/u/13398746/boat_race_receiver.html

This guy also runs on Chromecast now! The easiest way to make this happen is to update the app id and setup your own Chrome Sender:

https://developers.google.com/cast/docs/chrome_sender