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 films shot in a documentary style. Scenes and character backgrounds are written, but actors have no rehearsal time and the ensemble improvise scenes while filming them. This series of films began with This Is Spinal Tap (directed by Rob Reiner), and continued with Waiting for Guffman, Best In Show, A Mighty Wind, and For Your Consideration. Guest also had a featured role as the evil six-fingered Count Rugen in the film The Princess Bride.