For me it's a tie between "Will the real Martian please stand up" and "To Serve Man". I absolutely love this show and I've been watching it my whole life. I can even almost recite each show word for word. I have the whole collection and I watch Sci-Fi all the time when they play it. Anyways, what's your favorite episode? If you can't think of the name, explain the story and I should be able to name it.