Silent Night, Deadly Night (1984) Traumatized tot grows up to punish the naughty while dressed as Santa. Controversial on release, but really just another slasher. TIL: Ben Franklin always said that a good conscience is a continual Christmas. The naughty should keep that in mind.
Your daily dose of culture courtesy of Santa and the Ice Cream Bunny (1972) - "Christmas is a time when people of all religions come together to worship Jesus Christ." - Bart Simpson