I strongly recommend Greg Bear. His first novel "Blood Music" is a unique take on an AI out of control, and he continues with a series independent of novels which all take place in a unified "future history". One of my favorite aspects of his future history is the combination of the bio-genetic, cosmetic surgery, and pop media artist industries to create transhumanist pop media artists, and spawning a transhumanist youth movement and a counter transhumanist political movement, with all the human chaos that would result wonderfully illustrated by his prose.