I love the first two Home Alone movies. They NEVER get old! Some other favorites include It’s a Wonderful Life, Christmas With the Kranks, The Santa Clause, and I’m sure a few others I can’t think of right now.
“Love, Actually”. For kids movies though, my favorite from childhood is probably “The Grinch Who Stole Christmas”. I also like a newer flight of 4 Christmas shorts – 2 with “Madagascar” characters, one with “How to train your dragon” characters and the 4th one escapes me right now b/c I’m drugged up with Nyquil and about to take a nap.