Hmmmmzies...
For understanding the world and how it got this way, Daniel Quinn. Especially Ishmael, My Ishmael, and the Story of B. To go more in-depth, most anything by Derrick Jensen, especially Endgame.
For philisophical, nature-of-self-and-being stuff, anything by Peter Ralston.
For biblical stuff (I'm into biblical exegesis and criticism, what can I say?), Steve Allen on the Bible, Religion and Morality by (of coruse) Steve Allen, Who Wrote the Bible by Richard Friedman, and Beyond Belief by Elaine Pagels.
For fiction... hmm...
The Austin Family series and the Wrinkle in Time trilogy by Madeline L'Engle
Earth, by David Brin
The Starlit Elves series by Gael Baudino
The Matador series by Steve Perry
The Athenian Murders by Carlos Sonoza
and The Mary Russell series by Laurie King.
That was kind of fun to list.
