Christopher Haden-Guest, 5th Baron Haden-Guest (born February 5, 1948), better known as Christopher Guest, is a British-American screenwriter, composer, musician, director, actor and comedian. He is most widely known in Hollywood for having written, directed and starred in several "mockumentary" films that feature a repertory-like ensemble cast. In the United Kingdom, he holds a Baronial peerage, and has publicly expressed a desire to see the House of Lords reformed as a democratically-elected chamber.

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