I just watched the new videotape. It has parts of the original Xmas special, with the log and Run DMC video, plus two epichoads. The first one is called "Huh Huh Humbug," and is based on Dickens, with Beavis playing Scrooge. The second one is "It's a Miserable Life," with Butt-Head reprsing Jimmy Stewart's role. The first one is pretty cool, but the second one kind of sucks.
On a related note, I went to see the Nutcracker, and when I started headbanging during "Dance of the Sugar-Plum Fairy," the person I was going with elbowed me. It was pretty cool.