The most memorable robot story I saw was an episode of the Twilight Zone. It was called "The Lonely."
A man had committed a crime and was sentenced to spend the rest of his life ALONE on an asteroid in space. A sympathetic space ship captain secretly brought him a robot woman to keep him company on one of his yearly scheduled visits.
They became very close. Then the captain shows up again and tells the man his sentence has been commuted and he can return to earth. The man doesn't want to leave without his robot. But the weight of the robot prohibits it coming along.
The man is heart broken and almost decides to stay until the captain shoots the robot in the face and we see all the wires and machinery as she says the man's name for the last time.
The End.