Dean Stockwell is an actor of film and television, active for over 60 years 
and unlike many child actors, he continued to act well past his teenage
years. He is most known for his role as Rear Admiral Albert “Al” Calavicci
in the NBC television series Quantum Leap (1989 – 1993) and in the Sci 
Fi revival of Battlestar Glactica as Brother Cavil.

Young Dean Stockwell in Anchors Aweigh (1945)

Dean Stock as a Japanese soldier in  A Quality of Mercy a Twilight Zone
episode in 1961.

Dean Stockwell with costar Scott Bakula, right, in Quantum Leap

The sitcom was in syndication until July 2, 1961. It then aired on CBS-TV
from October 1, 1961 until February 6, 1966. The show starred Alan
Young as Wilbur Post and Connie Hines as his wife Carol Post. The
horse (Mister Ed) was a Palomino and was voiced by former western 
film star Allan Lane.

   
     Shown here are stars Alan Young, Mister Ed, and Connie Hines

 
            Allan “Rocky” Lane, the voice of Mister Ed