Genius: The Life and Science of Richard Feynman, Gleick
Q: "I read both of Feynman's autobiographies! Why would I need to read a biography?"
A: "Because it's awesome."
Gleick, firstly, goes far deeper into Feynman's life than Feynman did. Feynman didn't consider his books to be autobiographies; they were "Adventures of a curious character." They were a few hilarious events picked from his long, full life.
Gleick's book covers many of the hilarious aspects, but also covers the painful and formative aspects. Also curiously missing from Feynman's books were his science. Feynman wrote about his adventures, Gleick covered the adventures, the disasters, and the science.
Brilliant, enthralling reading. Highly recommending to anyone who enjoyed Surely You're Joking, Mr. Feynman! (Which is, in turn, recommended to anyone who likes funny stories. It reads fast, BTW.)