I like movies from Hollywood's golden age. Some Christmas films I liked are:
Remember the Night (1940)
The Shop Around the Corner (1940)
I'll Be Seeing You (1944)
It's a Wonderful Life (1946)
The Bishop's Wife (1947)
Miracle on 34th Street (1947)
Of those I'd say The Shop Around the Corner is my favorite. The Bishop's Wife and Miracle on 34th Street are probably next.
Of those I rented for my kids when they were growing up, the ones I recall are:
A Christmas Story (1983)
Gremlins (1984).
Really enjoyed A Christmas Story, its scenes of Cleveland took me back to my memories of the late 1950's when we lived very near there. Plus besides that connection what was really spooky, the name of the Parker's two sons are my younger brother's and my names.