Mike Farrell is an American actor and activist, best known for his role as Captain B.J. Hunnicutt on the television series M*A*S*H. Born on February 6, 1939, in St. Paul, Minnesota, he has appeared in various films and television shows throughout his career, showcasing his talent in both drama and comedy. In addition to acting, Farrell is a prominent advocate for social and political causes. He has been involved in various humanitarian efforts, including work with organizations like Amnesty International and the American Civil Liberties Union. His commitment to activism has made him a respected figure beyond his entertainment career.