If anything can kill a game fast, it's crappy camera setup and control, which this game give you a heaping helping of. Doesn't help either that the game will occasionally fry your save, which has happened to some people more than once. The only redeeming quality is the exceptional cutscenes, which make you feel like you are in an episode of the show. But you can probably pull these up online somewhere or just ask a buddy who's already got the game to watch them.
Unless you collect Simpsons paraphenilia or just want a reason to waste money, rent the game. Even if you find it for $20, I'd say you were paying too much.
-AHHHHHH!! BUNNIES!!!! No meat!