As a budding comic book artist, I found this book very useful. The facial expressions are well photographed and the models (both attractive and not so much) have some great and unusual expressions which are definately useful. Also though, the hairstyles, weight and age of the models is agreat help. Most reference books use people ages only 20-30, but this book covers ages 20 to 83.
Also at the end of the book, there is a gallery of sequential expressions, kissing, hats & headgear and phonemes (for those not in the know, these are the shape your mouth makes when you say certain letters. Dead useful for animation).
Definately great reference for any artist, but it would have been better in colour, hence the 4 star rating.