Anthology type science fiction program with a different cast each week. Tending toward the hard science, space travel, time travel, and human evolution it tries to examine in each show some form of the question, "What is the nature of man?"

 This show changed my life. How can any movie or TV show do more than that? Best 10 episodes: "The Architects of Fear", "Nightmare", "Demon with a Glass Hand", "O.B.I.T.", "Corpus Earthling", "The Sixth Finger", "It Crawled Out of the Woodwork", "The Borderland", "The Galaxy Being", and "The Inheritors". And don't miss the great performances by Robert Culp, Robert Duvall, David McCallum, James Shigeta, Jill Haworth, Martin Landau, Jeff Corey, Salome Jens, Martin Sheen, Henry Silva, Ed Asner, Nina Foch, George Macready, Sally Kellerman, Arline Martel, Warren Oates, Michael Ansara, Ivan Dixon, Leonard Nimoy, and Steve Ihnat - among others.