Danno Has Died: James MacArthur, 72
James MacArthur, the man who was Danno to Jack Lord's Steve McGarrett on the 1970s television police drama Hawaii Five-O, died in Florida today, according to his agent. Although he had a long career on stage and screen, it was MacArthur's work playing Danny "Danno" Williams on Hawaii Five-O that resonated with the public.