Check and Double Check (1930)
Starring: Freeman F. Gosden, Charles J. Correll, Duke Ellington
Plot: This early "talkie" features a typical Amos 'n Andy storyline which has the boys trying to make a go of their "open-air" taxi business while they get caught up in a society hassle, involving driving musicians to a fancy party. All the regular characters are here (or mentioned), including the famous Mystic Knights of the Sea and Kingfish. The only film appearance of radio's long-running characters -- in blackface.