It doesn't seem like a point of dispute with too many people that the quality of The Simpsons has taken a sharp nosedive in recent years. Even among fans, there seems to be a great deal of people, not necessarily a majority but close to it, who believe that the show quite simply is not what it used to be. So I've been wondering for a while now, at which point did the series begin the decline into what it is now? And, to be really specific, what was the last episode to exemplify the kind of show the Simpsons used to be, versus its present form?
Me, I can't really pinpoint where it started to go wrong but theres a few things that made it bad for me:
1. Too wacky, no plot as a result. Simpsons episodes didn't always start off with a 7-8 minute segment that has absolutely nothing to do with the rest of the show.
2. Lisa is too stuffy, pretentious, and annoying. In earlier episodes, she was still a kid, despite being smart. It'd be okay if she seemed very adult-like if not for her grating personality. See "Lisa the Skeptic" (Season 9) for examples of that. Don't get me wrong--Lisa is the main focus of my favorite episode (the one where she gets a crush on her substitute teacher), but in episodes where she was actually good, her maturity made the episode more heart-felt.
3. Too many pop culture and product references. Bart has a Playstation, the family is eating Poptarts, etc. Archie Comics started doing this around the time I stopped reading them when I was 12--the kids were constantly drinking "Poopsi Cola" and so on.
4. Relies too much on guest stars. It's okay when they put guest stars on for cameo appearances (Sara Gilbert doing the voice of his new neighbor that he had a crush on or Joe Namath showing up in "Bart Star" for half a minute to say, "I'm Joe Namath" and briefly mention vapor lock, but think of the episode where N*Sync showed up and they spent 5 minutes glorifying them just for being famous.
One of the more recent episodes that I think exemplifies a couple of the above things is the one where Marge writes a romance novel. Throughout the episode, there was some wacky subplot in which Homer lost his job 3 times and became an ambulance driver. It made no sense and did nothing to contribute to the main plot. Meanwhile, when Lisa found out about the novel, she started nagging Marge about how it seemed to be alluding to her parents' actual marriage.