Just a couple months after its hardcover debut, this dark, wonderful novel from the mind of Watts is now available via Creative Commons (i.e. free) download. Go read a few pages on his site, download in html/pdf, and enjoy: Blindsight

Full disclosure: I've had the opportunity to workshop with Peter, and I read chunks of this in progress. He brings a professional scientist's brain and a relentlessly realist sensibility to science fiction. This is awesome stuff. Check it out.