Warning: this post contains spoilers about EA's The Simpsons Game, specifically about the end of the game. If you're trying to go into this game with no knowledge whatsoever, go ahead and skip this post.
But since we don't think there's anyone out there on a Simpsons Game Media Blackout, and since both our sources published this right in the headline, we'll go ahead and reveal the BIG TIME SPOILER: Simpsons creator Matt Groening will be appearing in the game as the final boss.
"I'm a boss that you have to fight at the end of the game. It was really fun recording a million ways of dying, going 'UGGH, ARGGH, EUURGH!'"
Between the preponderance of old and new Simpsons characters, and the video-game-parodying plot, The Simpsons Game actually sounds pretty great!