yeah, LOVE that book. stunning doesn't even begin to describe the images. i went out and bought the DVD documentary as well, another great look at his work and life.
he did an interview four years ago (Feb 2003) with Apple for their "Pro" series in which he talks about his work and gear. it's a bit dated now but an interesting quick read for those so inclined: http://www.apple.com/pro/profiles/nachtwey/