Christopher Guest

Christopher Haden-Guest, 5th Baron Haden-Guest (born February 5, 1948), better known as Christopher Guest, is an English-American screenwriter, composer, musician, director, actor, and comedian who holds dual British and American citizenship. He is most widely known in Hollywood for having written, directed and starred in a series of comedy films shot in mock-documentary (mockumentary) style. Scenes and character backgrounds are written, but actors have no rehearsal time and the ensemble improvise scenes while filming them.