I love books about language. This is a particularly good one. The focus of this book is punctuation. There are examples of rules (though this is not a rule-book or style-guide) and errors, as well as a variety of rants on an apparent inability to use punctuation properly and the apathy with which most people seem to view this inability.
I think it might be time to free my inner punctuation-Nazi. This book is a call-to-arms for all language-lovers. The way in which we communicate is being degraded daily. As Confucius said, "If language is not correct, then what is said is not what is meant."