As far as journalists go, Peter Jennings is a man that I truly admire. He has written three books with Todd Brewster: The Century, The Century for Young People, and In Search of America. I really enjoyed In Search of America.
Also, Anderson Cooper's Dispatches from the Edge is rather interesting. It details his "life as a journalist and human being in Sri Lanka, Africa, Iraq and Louisiana/Mississippi".
In Fact is a good book comprised of non-fiction essays by a myriad of authors.
Speak, Memory by Vladimir Nabokov is a memoir, and is quite beautifully written. His other work, such as Lolita, is also good, but that is fiction.
Varieties of Religious Experience: A Study in Human Nature by William James is rather interesting. He is not making a case for any particular religion or belief system, what he is doing, rather, is trying to understand the various ways that people experience God or the supernatural and what that means for humanity.
I could probably go on, but I think that is good for now.