I have an example rails 3, backbone.js, coffeescript and mongodb app at https://github.com/codebrew/rails3-backbone-coffeescript https://github.com/codebrew/rai

I have an example rails 3, backbone.js, coffeescript and mongodb app at https://github.com/codebrew/rails3-backbone-coffeescript https://github.com/codebrew/rails3-backbone-coffeescript I haven't gotten much time to work on it for the past week, but it might help you get started.