Peter Gallagher is an American actor, singer, and writer, born on August 19, 1955, in New York City. He is best known for his roles in films like The OC, While You Were Sleeping, and American Beauty. Gallagher has a distinctive voice and has also performed in various stage productions, showcasing his talent in both acting and music. In addition to his film and television work, Gallagher has appeared in numerous Broadway shows, earning acclaim for his performances. He has received several awards throughout his career, including a Tony Award nomination. Gallagher continues to be a prominent figure in the entertainment industry.