Stick & Rudder - old book but still excellent, better than alot of newer books I tried.
Chickenhawk - superb read (anyone know what happened to him after the incident at the end of the book?)
Wings on my sleeve - Eric 'Winkle' Brown - A FAA test-pilots story (think he's still alive now, I hope so), for anyone who thinks they are really something special as a pilot and have a serious pair of balls - read this and adjust your perception of yourself. Entertaining and bloody scary. Also check out the list at the back of the book of types he's flown in his career (S/E, M/E, Jets, helicopters, gliders, military & civil, you name it - literally).
Slide Rule - Neville Shute: Biog of his early life, flying in the 30's and the R100/101 airship projects, proof, nothing really changes with governments.