I would choose 'the African Queen' reason being every Christmas when we were children in the 1950/60s it was shown on the TV we ALWAYS had to watch it with my parents, assorted Aunts/Uncles cousins etc. a truly magical time that you never really appreciate as you aren't old or wise enough . I always pretended not to want to watch but secretly loved it and found it thrilling and still do. I would decorate the screening room with a smoking coal fire which wouldn't heat the room , homemade paper decorations, never enough comfortable seats, bottles of beer, a bottle of sherry and a box of unopened dates, and a huge bag of pick and mix from Woolworths. Sheer nostalgic bliss.