1. "Miracle on 34th Street" (the original B&W version, NOT the colorized one and ABSOLUTELY NOT the remakes).
2. "A Christmas Story."
3. "Die Hard."
There are any number of other movies that are OK to watch at that time of year. Chief among them, of course, is "It's a Wonderful Life" and "A Christmas Carol" with Alistair Sim. Less classic are "The Lemon Drop Kid," "Holiday Inn," and some others.
White Christmas
Christmas in Connecticut (original)
Christmas Carol - 1938 MGM version with 3 of the Lockhart family playing the Cratchits.
It Happened on 5th Avenue
Remember the Night - needs to be seen more - an absolutely wonderful film written by Preston Sturgess.
Miracle on 34th Street
Holiday Inn