socket.io application structure

Can anyone reccomend a clientside MVC framework for a socket.io application? Small, light and tight are my only reqs.

I have used backbone.js in a couple of work related projects and its great, although mainly structured for a REST interface not WebSockets.

If you already know backbone, there is no reason not to continue using it!

How to use backbone.js with websockets/socket-io/nowjs