My favorite part was Crowley being locked in the trunk for the whole episode.
It was a pretty decent start to the season. I was kind of expecting the Angels to appear physically on Earth, rather than needing vessels, but that's no big deal. I just hope the whole season isn't about a gang war between the Angels. It will get pretty boring pretty fast without monsters.
And it was great to see Death and Bobby. I hope we haven't seen the last of either.