@ecryan - Sorry to nitpick, but I'm personally not a huge fan of "and or" in general (IMHO it makes the guide seem less confident).  Maybe a slight rewording would make it clearer:

"Hooks are implemented as methods and provide you an extension point to intercept and modify the default behavior to meet your needs. For example, `Ember.Route` allows you to use a number of hooks (e.g. `model`, `setupController`, etc) to override the default behavior. The example below illustrates using the `setupController` hook."

Not sure that is perfect, but I figured it was better to make a real suggestion than just nit-pick yours...