Holy wow McCow. I can see why even TPTB love this -- it starts out so cute, y'know? Just like the Doctor. And then, stanza by stanza, like history, you bring out all the implications about his Chaotic (Good? some days) alignment.

It's also staggering on an artistic level because it fuses the song and the source so seemlessly that it's hard to believe the song wasn't written for the show. That's why they call it Zeitgeist, I guess.