This version of "O Holy Night" made the rounds for the internet long enough for internet people to do what they do best: find out who could have butchered the song so delightfully. The answer was a man named Steve Mauldin who was so proud of his recording (or maybe just incensed that other people were taking the credit for it) that he made a YouTube video that laboriously backs up his claim that he and no one else is responsible for this.
What makes Mauldin's version of "O Holy Night" so awesome is not how tuneless it is (and my God is it that - this song makes my cat leave the room) but how passionate. Mauldin loves Jesus and this song clearly gets to him in a profound way. I really believe there's nothing quite like this.