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Leonid Gaidai is a Soviet and Russian film director, actor, and screenwriter. He is best known for his comedies. His most famous works include Operation Y and Shurik's Adventures (1965), Kidnapping, Caucasian Style (1967), and The Diamond Arm (1968). Gaidai's comedies are characterized by their slapstick humor, absurd situations, and clever dialogue. They are considered classics of Soviet cinema and have been enjoyed by audiences around the world.