1) It's a Wonderful Life
This is a wonderful heart-warming life-affirming movie directed by Frank Capra and starring Jimmy Steward and the gorgeous Donna Reed. At 8.7 it is the highest rated movie in IMDB for all three (although it ties with “Rear Window” for Stewart).
The movie is not without its flaws, but for me these are easily forgiven in the face of its brilliance.
We watched this movie as a family for the first time last Christmas and everyone was very excited about watching it again this year. We did so just before Christmas and it did not disappoint.
Everyone should watch this movie once a year!
2) Scrooged
I've always liked Bill Murray and this, along with Groundhog day, are my favourite of his movies.
Like the Dickens original, it deals with a man who rediscovers what is truly important thanks to the intervention of 3 ghosts.
It has moving moments, comedy, and an uplifting ending which make it perfect Christmas fare.