Joaquin Phoenix, who was nominated for a best actor Oscar for his starring role as Johnny Cash in the biopic Walk the Line , has announced that he is putting his life as an actor behind him. Interviewed by the syndicated Extra at a benefit for the Association of Hole in the Wall Camps founded by Paul Newman, Phoenix, who has just completed filming the drama Two Lovers, said, "I want to take this opportunity ... to give you the exclusive ... that this will be my last performance as an actor. ... I'm not doing films anymore." Phoenix said that he intends to focus on building his career as a singer. "I'm done" with making movies, he said, "I've been through that." Although he was also nominated for an Oscar for best supporting actor for Gladiator , Phoenix has experienced an up-and-down career as an actor. His last film, Focus Features' Reservation Road, received mostly negative reviews and earned a scant $121,994 during a three-week release on 14 screens. ( Walk the Line , by contrast, earned an imposing $119 million.)