More than one of the best adult cartoons of all time, “The Simpsons” is a contender for the best show ever made, period. Well, the first nine (or ten) seasons, that is. Afterward, it starts to go downhill in a major way. Depicting the escapades of Homer, Marge, Bart, Lisa, and Maggie, the best episodes of this massively influential series deliver “Inception”-level layers of satire, with jokes that are as pointed now as they were over twenty years ago. Timeless is the operative word here. “The Simpsons” did it, indeed.