I have been re-reading Brando's autobiography 'Songs My Mother Taught Me'. I hadn't read it since it first came out and at that time I found it very unsatisfactory, especially having previously read Peter Manso's huge biography of the great man.
On second reading I enjoyed it much more and appreciated the eccentric humour running through it. If you want a warts and all expose this isn't it, but if you are looking for a gentle volume of often unrelated anecdotes you will enjoy this.
I have also been reading the posthumously published novel he wrote with Donald Cammel called 'Fan-Tan'. It's surprisingly good.