During the 1920's movies became popular, and in the late 1920's sound film was introduced,
220px-Metropolisposter.jpgMetropolis (1927) is one of the most popular movies of the 1920s.
In the 1920's they had silent films, live music was the only sound that was played, but in 1926 with the creation of sound synchronization talking and sound effects were in the movie

Charlie Chaplin was one of the most well known actors of the 1920's but he also wrote, directed and produced most of his movies, he is most recognized as his tramp character from his silent film The Tramp.
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A movie in the 1920s during the depression cost about 27 cents, now they cost roughly $12. Movie production for Metropolis was roughly $200 million, now they are about $200 million but after inflation $200 million back then is about $600 million now.