i have it and i can say it is great,volume one and two is a good reference.stop staring by osipa is also a very interesting book idf you want to know more about facial animation. i also have jeff lews dvd,the best dvd about charakter animation cause you can use it for every package you have and use,like InfoCentral said,it is a must have. also a good book is character animation in 3d but it is more software specific. another book i like and often use as reference is the animators survival kit by richard williams,great book.