Also, a somewhat obscure (I believe) movie called
Christmas Evil. Also known as
You Better Watch Out. Came out after the success of Friday the 13th, and shortly before
Silent Night, Deadly Night. Some people that've seen it think it's a ripoff of Silent, but it came out beforehand.
SANTA'S SLAY (wrestler bill goldberg plays a killer santa)
Gotta say, that's a hell of a movie. And, despite it's B-level cast (James Caan excluded, although, we know what happens there), it's really not that bad a flick. Down right enjoyable. Then again, I looked at it as a comedy, not a horror movie, but I'm sure they were aiming for comedy. I hope they were.