There is a constant debate as to the value of textbooks in general in this information technology age. This is perhaps most marked in the field of molecular genetics, which is moving at such a pace that a chapter could almost be redrafted or updated on a weekly or at least monthly basis given the rapidity of new developments. Nevertheless there is value in collating all the current information and attempting to put a field in context. I think that such is the intention of a volume such as this. Klockgether has amassed an impressive field of contributors to this large volume on ataxic disorders. The book spans some basic neuroanatomy and neurophysiology of the cerebellum through clinical approaches …