British-American screenwriter, comedian, musician, director, and actor
Christopher Haden-Guest, 5th Baron Haden-Guest (born 5 February 1948), known professionally as Christopher Guest, is a British-American actor, comedian, screenwriter and director. Guest has written, directed, and starred in his series of comedy films shot in mockumentary style. He wrote and acted in the rock satire This Is Spinal Tap (1984), and later directed a string of satirical mockumentary films such as Waiting for Guffman (1996), Best in Show (2000), A Mighty Wind (2003), For Your Consideration (2006), and Mascots (2016).
https://en.wikipedia.org/wiki/Christopher_Guest