"What does a yellow light mean..."
Throwing in my favorite episodes of all time,it's amazing how much work William Shatner did before Star Trek.
Twilight Zone: Nightmare at 20,000 feet. Shatner seeing the gremlin on the wing.
Almost everyone forgets Thriller, which was a horror rip off of Twilight Zone and Alfred Hitchcock. My favorite episode of that was "The Hungry Glass," where Shatner and his wife buy an old house on a sea cliff, and ghosts in the mirrors steal souls and pull them into the mirrors.
FWIW, looking back, I think the Bob Newhart Show (original) holds up better than Mary Tyler Moore. Not a specific episode, but they used to have these sequences where they would go into theme restaurants, and they were so real and so funny.