Man, back in the day you could not top the Simpsons no matter how hard you tried. Summer of 4'2" is evidence of this. Nowadays you can definitely tell they're just sticking around for the Longest-Running TV Series Ever record, and then canning the show after that season.
Also am I really the only one who enjoyed the movie? To me, it wasn't like most cartoon series movies, in that they're usually just really long episodes, but with the camera angles, different artwork, and actual plot, it actually felt like a movie to me.