It’s Santa Claus (Tim Allen) versus Jack Frost (Martin Short): Who’s gonna win? Santa vanquished a fascistic robot doppelgänger in part two—so is there really a chance Martin Short in a blue wig will pose any threat whatsoever? Rather than take sides, you’ll more likely search for an escape clause of your own. The humor in the first two Santa Clause movies was primarily derived from Santa’s double life—he’s Scott Calvin in the real world—but this three-quel is set at the North Pole, which has been more richly imagined in Elf and The Polar Express. Alan Arkin and Ann-Margret are mildly amusing as Scott/Santa’s in-laws, and Elizabeth Mitchell’s Mrs. Claus may draw in a few Lost fans, but this is all really a big waste. At least the outtakes at the end are funny.