I have recommended it to others because the complete and concise manner of Dr. Barkley's book, allows for easy understanding, thereby empowering its readers with a sense of value they may have thought they had lost or didn't deserve.
It gave me peace of mind and a foundation to start my family on the road to recovery.
Another book that I believe will complement this one is "Brain Lock" by Dr. Jeffrey Swartz.
The reason that I do not give this book 5 stars is that it is not a complete picture of ADHD. The medical disorder model is not the only way, and not neccesarily the best way to view this condition. I can only think of one paragraph in the whole book that mentions positive traits which are associated with ADHD. You really need to read a wider range of books to get a more complete picture.
Hallowell and Ratey's "Driven to Distraction" gives a wonderful look at the many different ways that ADD can affect people and some idea of what it feels like from the inside. Thom Hartmann's "Attention Deficit Disorder: A Different Perspective" views ADHD as a personality trait with distinct advantages under the right circumstances rather than a disorder. These books will help expand Dr Barkley's important viewpoint.