You know, the whole time I was doing hospice work, you could tell when someone had picked that book up for the first time, because they were completely blown away by the first part. Completely. They'd be walking around with the book in their hands and this glazed expression on their faces.
And then they'd hit about page 150, and they'd get that Scooby Doo Puzzled Look going, and they'd start flipping around, going "Arroooo?" and other Scooby-like noises.