>>150173617
Out of curiosity I watched the higher-rated episodes starting with S27
>Barthood
Centered on Bart on different stages of his life. I generally like episodes that take place in the near future (or at least with the characters having aged) and this was no exception
>A Serious Flanders 1-2
That one that's been mentioned here as a parody of prestige TV, and not tied to continuity. I liked it too
>Treehouse of Horror XXXIII
First story was Marge getting possessed by an evil book taking advantage of her reppressed resentment, and Maggie trying to save her. The second one is the Death Note parody with actual Death Note animators and anime'd designs. The third one takes place on a theme park where the Homer animatronic gains sentience. Pretty solid lineup
>Bart's Birthday
Mentioned here, too. Parodying various tropes for series finales

Barthood was my favorite of these