This is one of my favorite things I've ever done. My favorite things I ever did with the show were to fuck with the show. This, the Slenderman arc in the beginning of season 2, the finale, all stuff I'm really proud of.
So, the first part I consider to be pretty impeccable.
The song in the middle is the first track on the last Metroids album, which again, I'm really into.
Then we have the 2nd part of Taint Misbehaving, which I do like, but it's sort of lazy. I did these extended 2nd bits, that didn't require writing, when I wanted to do more ambitious first bits, I think. In either case, I really like this episode.