How do I verify jQuery AJAX events with Jasmine?

I am trying to use Jasmine to write some BDD specs for basic jQuery AJAX requests. I am currently using Jasmine in standalone mode (i.e. through SpecRunner.html). I have configured SpecRunner to load jquery and other .js files. Any ideas why the following doesn't work? has_returned does not become true, even thought the "yuppi!" alert shows up fine.

Eat, Sleep and Breathe Unit Testing/TDD/BDD

I do write unit tests while writing APIs and core functionalities. But I want to be the cool fanboy who eats, sleeps and breathes TDD and BDD. What's the best way to get started with TDD/BDD the right way? Any books, resources, frameworks, best practices?