December 8, 1937 - October 28, 2010Adopted as an infant by Charles MacArthur and Helen Hayes, James caught the acting bug early in life. According to Wikipedia (hey, for this kind of stuff, the Wiki is just fine!) his godmother was Lillian Gish, and frequent family guests included Robert Benchley, John Barrymore, John Steinbeck and Harpo Marx.
Does that explain the hairstyle?
MacArthur was best known as "Danno" on television's "Hawaii Five-O", but as with most successful actors, he had a career both before and after his 11 years as side-kick to the world's coolest cop.
Before "Five-O", he could be found in classic episodes of "Gunsmoke", "Hondo", "Tarzan" and "Bonanza".
After "Five-O", he could be found on "Hollywood Squares", "Love Boat" and "Fantasy Island".
News reports indicate he died at his home in Florida from "natural causes". I suspect the new "Hawaii 5-0" TV show was a contributing factor.
Rest in Peace, James MacArthur.