Dean Stockwell, an American actor with a career that spanned more than 70 years, died on Sunday. He was 85. Sources representing the actor say that he died peacefully, in his sleep at home. Among his best credits were a leading role in the sci-fi series “Quantum Leap,” “Air Force One” and David Lynch films “Dune” and “Blue Velvet.” Born as Robert Dean Stockwell in March 1936, Stockwell began his career as a child actor under contract to Metro-Goldwyn-Mayer. His first know film appearance was in “Valley of Decision” in 1945. Other early titles included “Anchors Aweigh” and “The Green...