Twilight Zone was best.
Although almost completely forgotten, Boris Karloff's Thriller was my favorite. Scared the heck out of me. I think it had one episode where a guy finds a girl hitch hiking after a car wreck (rainy night, of course), and he gives her a ride home. She's injured, and keeps getting weaker. When he gets to the parent's house she's unconscious, so he runs to the door, and bangs on it. The parents answer, and tell him their daughter was killed years earlier, but every rainy night, someone knocks on their door. At the end, Karloff says, "so if you pick her up on a rainy night, take her home. Take her all the way home."