Difficult, but based on whether I still enjoy watching the film after having seen it a few times
1. The Searchers
2. Lawrence of Arabia
3. The Dam Busters
4. Once upon a time in America
5. Dunkirk (not the remake)
6. The Blue Lamp
7. The Godfather
8. Gladiator
9. Apocalypse Now
10. Ben Hur
11...