Jack Arnold (October 14, 1916 – March 17, 1992) was an American actor, film and television director, best known as one of the leading filmmakers of 1950s science fiction films. He directed 15 episodes of The Brady Bunch, beginning with the Season 2 episode "The Un-Underground Movie"; the last episode which he directed, "The Hair-Brained Scheme", also happened to be the final episode of the series.