John Gartner's The Hypomanic Edge :
The Link Between (A Little) Craziness and (A Lot of) Success in America

Dr. Gartner, a practicing psychologist from Baltimore and clinical associate professor at Johns Hopkins University, has written a remarkable book, for anyone who's interested in bipolar disorder.  By way of an informal review, here's part of a note I sent him after reading the copy he gave me at a meeting:

Read your book on the way home on the airplane. Gobbled might be more accurate -- done by the time I reached Oregon. Main problem was figuring out how to eat the sandwich I bought in the Denver airport and keep reading at the same time!

You write extremely well. How to make historical accounts read like a page-turner novel -- wow. Between your writing and the men you picked to profile, I was fascinated and entertained...

His website includes reviews and excerpts from his book.