Tim Blake Nelson (born May 11, 1964) is an American director, writer, singer, and actor.
Nelson has appeared as an actor in the film, TV and theatre. He had a featured role as Delmar in the film O Brother, Where Art Thou?. According to directors Joel and Ethan Coen, he was the only one in the cast or crew who had read Homer’s Odyssey, a work upon which the film is loosely based.
He has directed film versions of his plays The Grey Zone, and Eye of God as well as writing and directing two original screenplays: 1998’s Kansas, and Leaves of Grass which was released in 2009. He is also the director of O, based on William Shakespeare’s play Othello but set in a modern-day high school. He is on the Board of Directors for The Actors Center in New York City, as well as Soho Rep Theatre. —Wikipedia