This week I saw the Simpsons movie, and I liked it. But mainly because it was just the Simpsons. Nothing fancy, nothing new, just an episode as any other episode, only taking 90 minutes.
All the characters you know are there and they're all playing their role. Excellent.
I can tell you what the story is about, but it is as absurd as any other Simpsons story, so it won't help you to decide whether or not you should see this one. But I can tell you, if you like the Simpsons, you'll like the movie. Although going to see it on the big screen is maybe not worth the effort, but then again, when you're a fan, you probably want to get the experience anyway.