In my view, Eckhart Tolle has some useful things to say regarding present moment awareness and so forth. However, when he ventures into the "Consciousness is evolving" realm things get troubling.
The troubling aspects are insightfully described by "David the Blade" at the Guruphiliac blog:
Thursday, 7 June 2012
For all his vanity, grandiosity and offensiveness, in my view Fiedrich Nietzsche had some profound insights. It may seem incongruous at first glance to suggest common threads between his philosophy, that of his compatriot Karl Marx, and the work of the Buddha.