The Power of Myth by Joseph Campbell
This one is basically a transcription, well it is, of his interview with Bill Moyers. I've read it over and over. My copy is underlined from front to back. Just get it. Honestly. Game changer.
Reflection's on the Art of Living By Joseph Campbell
This was the first book I read from hime when I moved to Vancouver. Very easy read. You can just carry it around with you and dip into when you need to for inspiration and insight.