i can't remember the title of the movie.. but i do remember a group of people in the woods hiding from a couple of killers in costumes like santa clause. i think they resort to cannibolism or something. can anyone recall this movie? everytime i switch to a random channel and find sweaty humans running through the woods, i think of that movie.
The only thing I can think of is a movie called Fortress where all these kids are kidnapped by someone dressed as Father Christmas, a duck and some other characters. I do remember being quite disturbed at some of the things they were doing to the children (torturing them and the like). Look that one up and see what you find.