Tim Blake Nelson is an American actor, filmmaker, playwright, and writer whose career spans film, television, and theatre. He gained broad recognition as Delmar O'Donnell in the Coen brothers' O Brother, Where Art Thou?, later appearing in films including Minority Report, Syriana, The Incredible Hulk, Lincoln, The Ballad of Buster Scruggs, and Old Henry. On television, he received particular acclaim for his performance as Wade Tillman / Looking Glass in HBO's Watchmen. Nelson has also written and directed several films, including Eye of God, O, The Grey Zone, and Leaves of Grass.