The Forms of Things Unknown - S1-E32
Trivia: This is the only Outer Limits episode that lacks both opening and closing narration. It was absent because "Forms" was the unsold pilot for a series called The Unknown. A second version, stripped of all its supernatural elements (Tone was simply a mad scientist, not a real time traveler), also failed to sell.
The Forms of Things Unknown - S1-E32
Trivia: Part of Dominic Frontiere's haunting musical score for this episode later became the theme and background music for the TV series The Invaders, a show for which Frontiere served as the primary composer.
Cold Hands, Warm Heart - S2-E2
Trivia: By weird coincidence, this episode features William Shatner (two years before Captain Kirk's adventures with the Vulcan Mr. Spock began) as an astronaut whose mission is dubbed "Project Vulcan." Also in the episode is Lawrence Montaigne, who would later play the Vulcan Stonn on Star Trek.