Livejournaler Ankh_f_n_khonsu posted a superb 40 title Singularity Studies Reader to the LJ Transhumanist community a short while ago, with direct Amazon links as icing. While I've read many of these, some are new to me... it's tome hunting time.

A multitude of favorites on khonsu's list: Kurzweil's Age Of Spiritual Machines, Hawkins' On Intelligence, Gershenfeld's When Things Start To Think, Paul's & Cox' Beyond Humanity...