My favourite Christmas film is one and only one, which has been with me for 26 years: Trading Places ('Una poltrona per due' in Italian) and that is simply because it is broadcast on TV every year on 24 December at 9 pm.
By now it has become a tradition to watch the film as we prepare for the traditional fish dinner on 24 December. Yes, Italy is that tradition. Then the next day, Christmas, we eat again. In theory one would also eat on the 26th ('Santo Stefano').