What viewers of SPN forget is how much writing goes into the background, and all the secondary characters. Jodie, Rufus, and Bobby get fleshed out here, along with building Crowley's character, to show the world beyond angels and demons and boys who kill bumps in the night. The lore and the research we usually just get bits and bobs of is laid out a bit more, along with the issue of bodies and evidence - remember why the vampires always went poof on Buffy? So there wasn't all the clean up? Seeing the background stories makes a lot of what we see weekly even more enjoyable. Plus, this episode is a real start of building the extended universe down the road (say hi, Garth! We'll see you next year!) This is an excellent episode set around the world we don't see, giving us reasons to care about the people we usually only get a few moments with here and there, and it gives the writers a whole new mine of jewels to dig into.