This book is very well presented, and makes a nice coffee table type addition to anyones collection. The art is great and varied, and the mixture of rendered shots, in-progress shots, concept graphics and screenshots of the art being produced in the various applications is very nice.
The information contained in the book is insightful, and gives many tips and snippets of how the artists and animators achieved certain effects, or managed to come up with the final result. There is actually more information than you would expect, but don't expect to be able to use this book as a guide to producing your own graphics :).
The only niggle I have is that some of the writing (which I presume has been translated from japanese) is very difficult to follow, and on occasion doesn't make much sense :) An example of this is (pg. 106) -start paragraph- "However, perfect drawings were not created right away. CG and the overall design were both created by mutually adjusting the forms. Of course, during the presentation stage, the motions were considered and the model was shown, The model that consisted of visual motions was ehibited and the technically difficult parts were described." -end paragraph-
I also purchased 'The art of game worlds' which I prefer to 'Japanese Game Graphics', although it is less technical.