(Born Oct. 09, 1954) Scott Bakula is an American actor most famous for leading roles in two science fiction television series, Quantum Leap and Star Trek: Enterprise. He also co-starred with Maria Bello in the short-lived 1996 CBS television series Mr. & Mrs. Smith (which bore little or no relation to the 2005 motion picture of the same title), and had a recurring role in the sitcom Murphy Brown. Scott has been in a committed relationship with actress Chelsea Field.