The Masters Of Doom is probably one of the most interesting non-fictional stories I've read in quite a while. The story of the Two Johns is so interesting, and "seeing" the studio id evolve and then proceed to unfurl is fascinating and makes for a great book. John Carmack is probably one of the most influential and important American game designers easily in the past 20 years. I highly recommend this book to anyone who has a passing interest in gaming or design. Honestly and seriously, this book is an extremely entertaining read and should be read by every literate gamer. The story of id is something else and deserves to be told. Whether you like their games or not, they are an extremely important part of our generation and should be remembered that way, regardless of what bullshit they do or have done.
BUT DON'T TAKE MY WORD FOR IT!