Tim Allen puts on a few pounds for his new job in The Santa Clause.
However, it was the horror genre that officially axed the sanctity of Santa. The inaugural installment of Silent Night, Deadly Night in 1984—there'd be four increasingly horrible sequels—unleashes a murdering psycho dressed in a Santa suit. Along the same, er, hook, 1996's Santa Claws features a similarly attired deviant-next-door, but this one, yes, bags his victims with the title weapon.
Recent years have seen a sleighful of onscreen Santas, the majority appearing in the cinematic equivalent of coal in your stocking: Jeff Gillen in 1983's A Christmas Story, Jan Rubes in 1985's One Magic Christmas, Jim Varney in 1988's Ernest Saves Christmas, David Huddleston in 1985's Santa Claus: The Movie, Richard Attenborough in 1994's remake of Miracle on 34th Street, and Tim Allen in 1994's The Santa Clause.