Wow, that was an amazing episode.
It started out like a typical episode and suddenly, we get a complete 180 with the Rapture and it all goes uphill from there. The last act of the episode was probably the most badass thing I've ever seen on Fox Sunday nights. Post-Apocalyptic settings are always awesome, and this one was spot on.
Anti-Christ was completely out of the ordinary, and he went out like the wimp he is. That ending though, is one huge mind-screw. So Claus is finished now or what?