Just published a simple component that gets you up and running with Backbone.js, Marionette.js, and Require.js immediately. Here’s the repo: https://github.com/danschmidt5189/yii-backbone-js
Publishing and including the appropriate scripts is extremely easy out of the box so long as you use AMD-loading a la requireJs:
Yii::app()->backbone->app = 'AppName';
Yii::app()->backbone->options = $options;
Yii::app()->backbone->start();
Suggestions welcome.