Dry...A Memoir by Augusten Burroughs (non-medical)
Also, a lot of people on SDN have recommended the Atul Gawande book which is pretty good (called "Complications....(don't remember the rest). It's written by a surgeon talking about his experiences in medicine, the guy also talks frequently on NPR.
Another medical book, "Stiff", by Mary Roach. It's mainly about how cadavers have been used throughout the ages. It has one really cool chapter on transplants, namely that of transplanting monkey heads.
Has anyone read, "House of God"? How was it? How old and relevant is it to medicine today?