17. Jeff Gillen in 'A Christmas Story' (1983)

Billy Bob Thornton aside, this Christmas classic's Claus may be the creepiest of all store Santas, for the unseemly glee he finds in being the latest person to warn Ralphie that the BB gun he wants for Christmas is just going to shoot his eye out - and then, for good measure, he kicks Ralphie down the slide into holiday purgatory. The stuff kids' nightmares are made of.