I can't pick 5, 10 maybe. In no order...
Fellowship of The Ring
My Man Godfrey
Duck Soup
Superman
Johnny Eager
Superman II
Empire Strikes Back
King Kong B&W
Godzilla: Destroy All Monsters
Yojimbo
13th Warrior
High Noon
Even that might change if you asked me what movies I thought were best, etc....I also forget 10 probably.
