I'd like to watch some Christmassy films with 3.8yo DD1 in the run up to Christmas. We have Elf, The Snowman, Muppet Christmas Carol, Mickey's Christmas Carol, Home Alone (I think she's old enough, we'll give it a go anyway) and Santa Clause The Movie.
Any other recommendations? They don't have to be great, but I'd prefer of they were not too awful as I have to sit through them too 