Isaiah Washington became so uncomfortable to worth with on the Grey's Anatomy set, that he was fired from his role as Dr. Preston Burke on the ABC series in 2007. At the time, the actor called costar T.R. Knight a "f---ot" during an on-set argument. (Knight was not there at the time, but he would later come out gay.) Washington also reportedly fought with costar Patrick Dempsey. "For the last six years of my life, I've been fighting off bigots," he told The New York Times in September 2013.