Home Alone (1990)- the original is my favorite; pretty much a perfect movie in my opinion. I like 2, though I view it as a parody of the first in a way
Gremlins (1984)- Absolutely a Christmas movie
Miracle on 34th Street (1947)
Holiday Affair (1949)
Muppet Christmas Carol (1992)
Christmas Vacation (1989)
White Christmas (1954)
It’s a Wonderful Life (1945)
Scrooge (1970)- the musical with Albert Finney
The Christmas That Almost Wasn’t (1966)- Quirky, wonderful 60s weirdness. Not nearly as well-known as it should be.