GameFAQs
FAQs, cheats, reviews, game saves, and a message board.

GameSpot
News, previews, downloads, cheats, movies, links, screenshots, and a review.

GameSpy
Description, review, cheat codes, and articles.

IGN
Contains news, review, previews, forums, cheats, articles, screen shots and videos.

Team Xbox
News, reviews, previews, articles, interviews, downloads, contests, forums, and a chatroom.