So last year, I stumbled upon an episode of Simpsons that wasn't Treehouse of Horrors. It was called "Halloween of Horrors". Season 27, episode 4. It was honestly one of the best episodes Simpsons I watched. Nothing outrageous, just a regular episode of Simpsons that also doubles up as a Halloween special. It was also on point, like almost as good as anything they did in season 4. I normally watch Treehouse of Horrors 1-7, since they're timeless, but Halloween of Horrors has been added to the list.