I have a hard time picking favorites for things like this but I have always really enjoyed "Holiday Inn". It pre-dates "White Christmas" and IMO is a much better script/storyline as well as having Fred Astaire. Don't get me wrong, both are good but I think "White Christmas" is mostly more popular because of its title.
I also enjoy "Christmas Vacation", "A Christmas Story", "Elf", and "Home Alone".