A Night at the Opera is a 1935 American comedy film starring Groucho Marx, Chico Marx and Harpo Marx, and featuring Kitty Carlisle, Allan Jones, Margaret Dumont, Sig Ruman, and Walter Woolf King. It was the first film the Marx Brothers made for Metro-Goldwyn-Mayer after their departure from Paramount Pictures, and the first after Zeppo left the act. The film was adapted by George S. Kaufman, Morrie Ryskind, Al Boasberg (uncredited), and Buster Keaton (uncredited) from a story by James Kevin McGuinness. Most of the physical gags were wholly lifted from Keaton's 1932 film Speak Easily. It was directed by Sam Wood. In 1993, A Night at the Opera was selected for preservation in the United States National Film Registry by the Library of Congress as being "culturally, historically, or aesthetically significant". It is also included in the 2007 update of AFI's 100 Years... 100 Movies, at number 85; and previously in AFI's_100_Years..._100_Laughs 2000 showing, at number 12. In A Night At the...