Zen Bassist
I love Brad Warner, and he actually made me want to read the Shobogenzo. I have yet to find a copy or pick it up, though. =P
I liked his first two books, especially Shut Up, but his last one seemed more of a winding rant about how much his life sucked for a bit rather than anything I found useful for study.

Don't get me wrong, I'm not ready to ditch the first two, but that last book felt like it was written to make himself feel better after cheating on his wife more than anything else.