Oh Kripke, how I love you! I can't believe you went there. Self-reflexivity in Supernatural? My Closer Analysis of Film professor would orgasm over this ep and usually she's only awed by seven minute shorts of lemons with lights revolving around them.
I can't get over all the in jokes in this episode either.
"That's makes even less sense than the salt."
However, I'm not happy at how little of Sam and Dean there was, and ONCE AGAIN, we are not moving forward with the arc, or dealing with Sam's powers, or basically anything that would send the story forward.