He's remixed a bunch of his books as ebook bundles at LeanPub.
Author of Secrets Of Consulting, More Secrets Of Consulting, Becoming A Technical Leader, the Quality Software Management series, Psychology Of Computer Programming, and lots more. His mentor was Virginia Satir, the family therapist. He often blows me away with his ability to say/ask something based on the hidden assumptions within what you just said. If he lived nearby I'd hire him as a therapist. In the meantime, when writing in his presence I tend to go into Quote Mark Mode.
I was a member of his closed/paid online SHAPE community. Also very stimulating.