Home Alone 2 is probably my favourite Christmas film. I'm conflicted, as the second one is so much more Christmassy and is a much better film until he enters that dodgy Uncle's house where it kinda flops. But I love the whole NY Christmas vibe the second one has - and the Pigeon woman is better than Old Man Marley.
I live for the made-for-TV fluff that Lifetime puts out.
And I feel sentimental about holiday movies I can remember from my childhood. The Muppet Christmas Carol, White Christmas, and A Christmas Story are some cute ones.