Well, "A Christmas Story" for sure, as well as "Elf". We also love some that aren't as common, but I think are perfect Christmas movies. "Scrooged" is a must - Bill Murray and everyone is hilarious. "Gremlins" is one of the first things I watch as soon as it is December. And I usually end up watching it several times. My husband loves "National Lampoon's Christmas Vacation", which isn't my favorite but has some awesome moments.