First three that come to mind:
Casablanca
Citizen Kane
Sound of Music
Then while typing:
Blazing Saddles
Out of Africa
Miracle on 34th Street
Blazing Saddles?!?!?!?!
SACRILEGE!
Oh, and I mustn’t forget...
Love Story
and anything that features a grown man acting like a baby and/or moron, from Harry Langdon to Cliff Robertson’s Charlie to Forrest Gump.
Blasphemer!!!
L
The Sound of Music is the greatest film ever made.