[book]I started and finished reading Michael Crichton’s Prey this weekend, which will give you some idea of how good it was. It was not as scary as Richard Preston’s The Demon in the Freezer: A True Story, but it was not really meant to be. Overall, the story was well-paced and engrossing, but not quite as good as my favorite recent Crichton, Timeline.
One of the fascinating uses of nanotechnology in Prey was a swarm of nanomachines that could work together to form essentially an electronic eye, to be used in medical imaging or surveillance. Although not expressed in nanotech:
See Linux Powers Airborne Robots at Wired News.