James Patrick Kelly has a new book out, Burn, published by Tachyon. It's a science fiction novel that explores some of the ideas of the Transcendentalists, particularly Henry David Thoreau. He's even podcasting the book a chapter at a time (feed link).
Jim talked about Burn recently on New Hampshire Public Radio's program "The Front Porch". I don't know how long they'll keep the audio download available, but it's an interview worth listening to, as Jim talks about the inspiration for the book, his view of Thoreau, what the future may hold, etc. He even has time to mention the singularity.