Hello All. Was just watching an episode of Voyage To The Bottom Of The Sea. I don't know what episode number it is, but the crew encounters a strange race of rock people who were once crewmen in the navy, or so they claim. In the scene where the crew first encounter them, the theremin soundtrack from Day They Earth Stood Still is heard. It's the sound heard when Gort makes his first appearance just after the flying saucer lands.
Really is amazing how many times sounds, musical themes, and even props get recycled in film, and television. :)