I'm sure some great ones will pop into my head later, but here goes (in no particular order):
In Harm's Way
Donovan's Reef
It's a Wonderful Life (every XMAS it's a must)
Rear Window
The Longest Day
Father Goose
The Graduate
Key Largo
The African Queen
A Streetcar Named Desire
Cat on a Hot Tin Roof
Cool Hand Luke
A Place in the Sun
Bob Green
Yokosuka, Japan