Hated it. The Simpsons used to be a cultural critique of the American nuclear (nuke-yuh-lur) family - in the past ten seasons it has descended into gag-shows aiming slightly lower than Family Guy and slightly higher than Futurama for cultural relevance. The storylines have gotten soppy while non-sequiturs dominate the humor. Character used to matter in The Simpsons - Homer may have been dumb, but he wasn't stupid. Now he's just stupid.
The movie, while funny, lands firmly in the latter half of the Simpsons 18 season run in terms of quality. I laughed. So what? Laughing isn't indicative of quality, even in a comedy. When I took theatre classes, I learned a great lesson: comedy is truth. That's why character, story, environment, all matter to how funny a movie is.
The random gags of The Simpsons movie beat out any other part of the film, including the stupid Flanders subplot. If the only thing I can remember in the film is how funny it was when something random happened, how good is the film actually?
Pixar's animated films have been moving in the right direction, from gag-oriented humor (Toy Story, Monsters Inc.) towards character and environment driven humor. The best example is The Incredibles, where the humor organically comes out of the interplay between the characters' family roles and their superhero roles. Or Ratatouille, where parts of the film aren't funny at all, yet the movie is truthful and beautiful. When we do get to laugh in that movie, it's a treasure. When we're not laughing in The Simpsons movie, we're bored, because NOTHING interesting is happening.
We're so conditioned to consider a comedy film as nothing but a string of gags and jokes - television sitcoms have us convinced that if the studio audience is laughing, then we should be. Even without a studio audience, we still think that everything must be punctuated by a laugh. The Simpsons movie is just trying too hard to fulfill that unnecessary expectation.
It turns out Paprika opened up in the podunk town I live in on the same day, and I mistakenly chose to see The Simpsons without knowing I was missing out. That error will be fixed ASAP.