what are some movies that you consider "classic"?

For me, it's two silent pictures: "THE GOLD RUSH" & "WINGS". (I have a lot more, but I'll just say those two for now)

The Great Escape
Magnificent Seven
Each Dawn I Die
Angels With Dirty Faces
The Fighting 69th
Cool Hand Luke

Bride Of Frankenstein
Arsenic And Old Lace
Dead Of Night '45
Rear Window
Vertigo
The Time Machine(original)
Forbidden Planet
Targets
To Kill A Mockingbird
Spirit Of The Beehive
David & Lisa
Weekend '67
Little Fugitive '53
Seconds '66
The 10th Victim
The World, The Flesh And The Devil


to name a few

King Kong (original)
Gone with the Wind
Stagecoach
Wizard of Oz
Casablanca