The Season 2 premiere focuses on three pioneers of TV sci-fi: Gene Roddenberry ("Star Trek"), Rod Serling ("Twilight Zone") and Irwin Allen ("Lost in Space"). The clip-filled nostalgia-fest features remarks from William Shatner, Leonard Nimoy and Nichelle Nichols from "Star Trek"; Bill Mumy, Angela Cartwright and Marta Kristen from "Lost in Space"; and such luminaries as Martin Landau, who explains why he turned down a certain pointy part in "Star Trek."