“[The] country’s pre-eminent impressionist in the 1970s and for years a fixture on talk, variety and game shows, … he is plotting his re-emergence courtesy of Jimmy Stewart & Friends, a hybrid of biographical theater and comedy that tells the story of that beloved actor’s life, as voiced by Mr. Little, with vocal cameos by dozens of luminaries who crossed Stewart’s path, and a few that did not. (Somehow, Dr. Phil pops up.)”