Here is another installment from the 2010 Science and Nonduality Conference - this is the Keynote Address from Adyashanti. I've not spent much time with his work, but what I have read or seen I quite like.
The author of The End of Your World, Emptiness Dancing, and True Meditation, Adyashanti offers spontaneous and direct nondual teachings that have been compared to those of the early Zen masters and Advaita Vedanta sages. However, Adya says, "If you filter my words through any tradition or-ism, you will miss altogether what I am saying. The liberating truth is not static; it is alive. It cannot be put into concepts and be understood by the mind. The truth lies beyond all forms of conceptual fundamentalism. What you are is the beyond -- awake and present, here and now already. I am simply helping you to realize that."