Quite possibly the single best book I've ever read. It's the one book that everyone should read before they die. In the event that you can't read, this book makes learing to do so worthwhile! (It's also worth pointing out that - despite RPF being a physicist of some note - this is a book about his life, not his profession - so you don't need to understand physics or maths to enjoy it)
Feynman's writing style is entertaining (as always), and here he's writing on one of his favourite subjects - R P Feynman :)
The stories he tells are wonderful - learn about how he "broke into" locked cabinets at secret goverment research projects [Los Alamos]. How he based his Nobel prize-winning work on spinning plates...the list goes on.
A curious character indeed, a wonderfully gifted human being. And a marvellous, marvellous book.