Actually one of my teachers watched every single version of Romeo and Juliet with the original text in front of him to prove that this was the worst version, but to his great dismay its the most accurate film adaptation of it, with the lines closest to the original text and most similar stage direction and relayed emotions.
I always tell people that my theory is that Chuck was Eric Kripke. The writer of the show, the creator of the world. And if you look at that— then no matter what you think about the mythology of the show— Chuck is Eric is the all mighty creator of Supernatural. And when Eric left the show, his last episode was Swan Song, which was his love letter to this world he’d created.