I've just started listening to podcasts of National Public Media's Speaking of Faith program with Krista Tippet. It's a very though-provoking show, covering aspects of what it means to be human with a focus on spirituality and ethics.
I've listened to a show on what autism teaches us about human-ness, a show about Goethe, science, and contemplative practice, one about teaching children about spirituality, and I have another dozen or so on my ipod waiting for me.
I linked to the show on Facebook and this flowchart from the Speaking of Faith blog was on their wall. I loved it, but there's a more complex one that's great too. Go to the link above and scroll down.