I hate to sound like some overexuberant fanboy who might fall in love with just the idea of this book, but I'll risk it. This Book Is Awesome. When I picked this up I expected nothing, but then I started flipping through, and there's literally something on every page that you can just start reading without having to start all the way at the beginning of the book, which I love. There are 100 word (about 100 at least) reviews galore on top of the 75 or so canon "best", and lots of bright and shiny pics of the best new games, plus a tonne from games I grew up playing (like the first lemmings!) There's a chapter on the back story of modern games which I thought would be boring, but which turned out to be surprisingly engaging! Exclamation!
There's just a huge amount of material in this book, and it's all so easy to access. If you're looking to expand your knowledge of videogames, and add some of the best to your collection, this is your book. I just can't recommend it enough