‘When did The Simpsons jump the shark?’ is a loaded question with multiple answers (FWIW, I don’t think it was the episode where Principal Skinner revealed his true identity). But if you wanted to use empirical data to back up your claim, now there’s a site to help.
SeriesHeat displays heatmaps of every episode from popular TV series based on IMDb ratings. Here’s one for The Simpsons:
![A heatmap of every episode of The Simpsons based on IMDb ratings.](https://cultrface.co.uk/wp-content/uploads/2021/11/Screenshot-2021-11-28-at-17.20.53-1024x812.jpg)
As you can see, Seasons 3-8 were the golden years and things started turning from Seasons 10-11. There’s not been a ‘green’ score since Season 12 Episode 18, which aired in December 2000.
Other top shows you can use include Futurama, Doctor Who, Game of Thrones. I think everyone can agree when Game of Thrones lost its way.
TV series related: What if Game of Thrones was aired in the 80s?, Emotional Simpsons Scenes, Dopesick: a miniseries about America’s opioid problem