From time to time, this episode from M*A*S*H pops into my mind. The show took a look inside the dreams of all the characters.
I think the most powerful scene featured Charles Emerson Winchester. In his dream, he couldn’t help a sick patient. He performs magic tricks — producing flowers from a magic wand, pulling a long streamer from his mouth — but nothing works. The patient dies and is taken away. The camera slowly pulls out on a shot of Winchester tap dancing while holding sparklers in his hand. Fade to black.
It still haunts me.