CoffeeScript, Meet BackBone.js is a simple Backbone.js tutorial written in CoffeeScript comprised of self-explanatory "hello world" examples of increasing complexity. It was designed to provide a smoother transition from zero to the popular Todos example. The bulk of this tutorial is a rewrite of the original hello-backbonejs tutorial.
See it in action: http://adamjspooner.github.com/coffeescript-meet-backbonejs/