The ending made me LOL. They merged scientology with Eden, both out of the blue, but what made it funnier was that I remarked out loud, "okay, where's the tree?" about 10 seconds before it showed up and the credits started rolling.
But I would have to say that the movie pretty much sucked. Cage's character didn't behave as though he was an MIT prof (like missing the whole coordinates business), and the girl didn't act as though she had graduated high school... That said, there were a lot of fun things in it, like when the creepo walks into the boy's room, and all the destruction, plus just the whole concept of the paper was neat. They basically took a cool story and ruined it with the plot twists.