Here is a 40-page PDF that goes over the basics of integral theory.
http://www.holons-news.com/free/whatisintegral.pdf
Path of Least Resistance - Robert Fritz
http://tinyurl.com/65t5nd
Diamond Heart Series - A.H. Almaas
http://www.ahalmaas.com
http://tinyurl.com/5ehse3
Loving What Is - Byron Katie
http://tinyurl.com/6qh9up
Yoga Nidra - James Jewel
http://www.amazon.com/Yoga-Nidra/dp/B00129HM0E
http://en.wikipedia.org/wiki/Yoga_Nidra
Interesting article about confusion about yoga nidra
http://www.swamij.com/yoga-nidra.htm
Big Mind - Genpo Roshi
http://www.genpo.org/Home.html
Ken Wilber's Wyatt Earpy Series
http://www.kenwilber.com/blog/show/46
(See the links at the bottom for important follow-up posts, etc.)
Fred Kofman
http://www.youtube.com/watch?v=T8bk4e69a_k
Futurist Gordon Michael Scallion
http://matrixinstitute.com/store/