Marx Brothers Films

1. The Cocoanuts (1929)
2. Animal Crackers (1930)
3. The House That Shadows Built (1931)
4. Monkey Business (1931)
5. Horse Feathers (1932)
6. Duck Soup (1933)
7. A Night at the Opera (1935)
8. A Day at the Races (1937)
9. Room Service (1938)
10. At the Circus (1939)

(The others are Humor Risk (1921) Go West (1940) The Big Store (1941) A Night in Casablanca (1946)
Love Happy (1949) The Story of Mankind (1957))

This arises out of a love of lists rather than any particular affection for Marx Brothers movies.