Best Movies from #-D

In case you missed them, here's a round-up of the best films from #-D:

Best Number:
12 Angry Men (1957)

Best "A:"
Alien (1979)

Best "B:"
Ben-Hur (1957)

Best "C:"
Casablanca (1942)

Best "D:"
Das Boot (1981)

So what's next?  What's the best film that starts with "E?"

Here's a hint: It's a sequel.