Love Burning in the Soul: The Story of the Christian Mystics by James Harpur
Mysticism by Evelyn Underhill (wonderful, insightful overview and analysis)
History of Mysticism by Swami Abhayananda
Integral Psychology, Theory of Everything, Eye of Spirit by Ken Wilber (re-reading)
The Gospel According to Jesus by Stephen Mitchell
The Essential Rumi by Coleman Barks
Articles on Integral Sustainability
Canticle to the Cosmos by Brian Swimme (DVDs)
Universe Story DVDs by Michael Dowd & Connie Barlow