Reading BORN TO RUN currently. I happened on it via xeroshoes.com since they based their sandals on the huaraches that the Tarahumara wore to run in. I read a kindle preview and then had to buy a hard copy so I can share with any many folks as I can.
I myself just read one of the best books on leadership I have in a long time; Extreme Ownership: How US Navy Seals lead and Win by Jocko Willink and Leif Babin. I found it extremely enlightening, as the authors use their experience and knowledge can in combat to determine principles. Within the text, they apply it to business, but the principles apply in all aspects in life. As a high performance coach in baseball I'm already envisioning where I can improve, and have many ideas for my day job in exercise rehab.
Side note: The main author, Jocko Willink has a pretty good podcast as well. He did a couple guest spots on Tim Ferriss and Joe Rogan's podcast that I highly recommend