A very well-written discussion of fascinating and, in some instances, very rare neurological syndromes. Recommended for those who are interested in the varied and often devastating effects of brain pathology on the human experience and quality of life. Dr. Sacks' abiding concern for the welfare of his patients, and the long-term emotional trauma that many of them suffer, comes through very clearly in his prose. The depth of his insights into the patients' mental states is also quite remarkable. With that said, some of the writing is highly technical, and some readers may find that annoying. 
 My 3-star rating reflects disappointment in the generally 'black-box' treatment of brain structures implicated in these cases. I realize that most readers may not want that level of detail. But in these detailed case descriptions, there was an opportunity to help readers understand the intimate connection between brain systems and abnormal behavior. For me, it was a bit like a detailed description of the exotic flavors of a dish, with little or no description of the ingredients. (I should say that I have the original 1985 edition, and there may be more detailed coverage of brain mechanisms in later editions). 
 Interestingly, Dr. Sacks comments in a recent New Yorker article (thanks to Lars for the reference) that he also suffers from the 'face-blindness' (prosopagnosia) that is featured in the title case for this book. I learned from neurosurgeons that neurological signs are present in about 30% of all patients who see primary-care physicians. Thus, case descriptions like these may have a relevance to everyday life that is not often discussed.