Modern Times, 1936
screwball comedy, silent film,
Charlie Chaplin

Bringing Up Baby, 1938, screwball comedy, Katharine Hepburn, Carey Grant; AFI's 100 Best Films. 

King Kong
1933, AFI's 100 Best Films. 

All Quiet on the Western Front
1930, AFI's 100 Best Films. 

Frankenstein 1931, horror.   
Boris Karloff; AFI's 100 Best Films

Other Period Films: 1930s
39 Steps The, British Film Institute's 50 Greatest British Films
Captains Courageous 1937
Cavalcade,
AA Best Picture
Cimarron, AA Best Picture
City Lights 1931 AFI's 100 Best Pictures
Duck Soup 1933 AFI's 100 Best Pictures
Grand Hotel AA Best Picture
Grand Illusion 1936
Great Ziegfeld
AA Best Picture
It Happened One Night, 1934 AA Best Picture, AFI's 100 Best Pictures
Lady Vanishes, The  1938, British Film Institute's 50 Greatest British Films
Life of Émile Zola AA Best Picture
Man Who Knew Too Much, The, 1934
Mr. Deeds Goes to Town
1936
Mutiny on the Bounty
, AA Best Picture, AFI's 100 Best Pictures
Rules of The Game, The
1939 
Sabotage 1936
Snow White
& the Seven Dwarfs AFI's 100 Best Pictures
Stagecoach AFI's 100 Best Pictures
Wizard of Oz 1939, AFI's 100 Best Pictures
Wuthering Heights, AFI's 100 Best Pictures
You Can't Take It with You, AA Best Picture

The Wizard of Oz
1939, AFI's 100 Best Films. 

Mr. Smith Goes to Washington, 1939; Political drama.  Dir: Frank Capra; James Stewart.  AFI's 100 Best Films. 

Gone with the Wind
1939, AFI's 100 Best Films.