God Rest Ye, Christopher Lee, and your new heavy metal Christmas songs. This is all the information you need in order to decide whether you want them or not (if the answer is not an emphatic yes, please see a doctor immediately), but if for some reason you're on the fence, the songs are "The Little Drummer Boy" and "Silent Night," they're both available on iTunes, and you can listen to a short sample of each in the above video.
While I idolize Lee to the point where I refuse to admit that anything he does isn't completely great, I will concede that perhaps "Silent Night" wasn't necessarily the best Christmas carol to choose for a metal adaptation. That said, you all still have to buy them. I mean, it's Christopher Lee singing heavy metal Christmas songs. It's a matter of principle, you know?
Infinite thanks to Phil Maise for the tip.