All five of these movies were basically dramas although one did mix in a little comedy and music. All are worthy of viewing by true film buffs and others who like old films.
1940 Best Picture: Rebecca
1941 Best Picture: How Green Was My Valley
1942 Best Picture: Mrs. Miniver
1943 Best Picture: Casablanca
1944 Best Picture: Going My Way
These Oscar winning best pictures are still enjoyable today as are those from the rest of the decade.