As a simpsons fan I can honestly say this videogame is rewarding and provides more than a few laughs.
Story-wise it's got a good potential, but doesn't do anything out of ordinary, it's still rising action-climax-falling action; but entertaining and fun nonetheless.
What really stands out is the comedy material. It's got some very good jokes and parodies of other games, my favorite being the dead waste poster, but go and see for yourself.
With a lot of collectibles for each simpson and a collection of 31 videogame cliches this game is very rewarding in my opinion.