Dean Stockwell (born March 5, 1936) is an American actor of film and television, active for over 70 years. He played Rear Admiral Albert "Al" Calavicci in the NBC television series Quantum Leap and in the Sci Fi Channel revival of Battlestar Galactica as Brother Cavil. Description above from the Wikipedia article Dean Stockwell, licensed under CC-BY-SA, full list of contributors on Wikipedia. ​