For the layperson, LeDoux's book is an excellent account of the scientific search for understanding what emotions are and what they do. Comparing it to the several trendy books about measuring emotional intelligence isn't quite fair--this is not a self-help book that stresses the importance of good social skills (which to me, seems what emotional quotient boils down to). Instead, this book nicely weaves the best of psychological, biological, and cutting-edge neuroscientific research to give the reader a good picture of what scientists currently know about emotions and how emotions are experienced in the body and the mind. But despite the comprehensive scientific explanations, the book is extremely readable and filled with real-world implications. For a professor of neural science, LeDoux writes creatively (love those subheadings!), and I think this book can do for the study of emotions what Carl Sagan's Cosmos did for astronomy.
For psychologists, particularly psychotherapists, this book should be required reading. Despite dealing with people's emotions everyday, few therapists can give more than a basic explanation of what exactly an emotion is, and how it influences human functioning. This is partly because most textbook discussions of emotions are either too basic or too difficult, are just plain boring, or don't make the implications for therapists clear. LeDoux's book changes all that--I've reviewed several academic books, articles, and texts on understanding emotions, and kept coming back to this one. Do your graduate students (who may be groaning under the pressure of a dry neuroscience text!) a favor and make them all read The Emotional Brain--they'll be just as educated, and a lot more excited as well.