I really love this story; it goes to a place that I haven't seen before, and does it so well. Jimmy as the last old model vessel on Earth (with memories), meeting the other vessel (without, and can you really say that *is* Dean Winchester, if he has no concept of self or memory?) is kind of cheering, then Castiel really dies for sure at last. Ow.

Heaven on Earth's weird fluidity of time was cool, and served the story well. the weather, the gaps in Jimmy's understanding, and his avoidance of former civilization are the bellwethers. Michael's change of heart - wiping Dean's memory and bailing for heaven - is a question that keeps pinging around in my head. He seems capricious and compassionate in the same stroke, highlighting how alien the angels really are.

I have to say that I once used the same Tom Waits song as the basis for a story, but I think the apocalyptic aspect is perfect for it.