Severe Weather Flying by Dennis Newton.
This book outlines his experiences flying specially hardened research aircraft through the middle of thunderstorms, cyclones and the like - with actual research tips on avoiding turbulence, lightning strikes, icing etc etc. Great, accessible read.
Flying the Line by George E. Hopkins
This outlines the development and history of the pilot union movement in the USA - a must for understanding the tough job of dealing with employers which (much as we ignore it) is SO much a part of this business. Will make you a MUCH more professional pilot, when you know the history of the JOB, rather than the SKILLS of flying.
The Air Disaster Volumes by Mac Job
You need the entire series - a MUST read to understand the development of the jet aircraft, with a great selection of (what should be) famous accidents in a technical, but well-explained format. (If you are Australian, you need the "Air Crash" series which proceeded it as well - explains the development of the unique Australian Airways system). Do you know why old aircraft don't have the park brake included in the take of config warning, but new ones do? - read about the crash which forced the development - and a dozen other interesting developments.
I vote for "Handling the big Jets" and "Fate is the Hunter" as well, of course.
I have
Kermode, the
Rolls Royce Turbine Engines book and
Aerodynamics for naval aviators as well - but they are technical reference works and frankly not worth it unless you are writing/studying.