I've noticed quite a few reviews here from book fans complaining that the movie wasn't true to the novel. As a fan of the book, let me just say that's true but it's fine. The overarching story is the same. The fact of the matter is with a nearly 400 page novel packed full of pop culture references, some things would have to be cut to make it onto the big screen. Partially it's an issue of length. Partially it's just the reality that the planets were never going to fully align to allow use of many of the properties from the novel. Yes, I loved the 2112, WarGames, D&D, Joust, et al references from the novel as much as the next person, but still I felt that Spielberg captured the wonder and fun and the story of the novel accurately, even if he did so using different references. The are actually some things I even think were an improvement from the book, especially the way they re-imagined I-R0k. The bottom line is, if you're a book reader, just take this movie for what it is, an alternate version of the story, written by the same person who wrote the novel.