"The Big God Network" by J.C. McGowan is my favorite science fiction book so far in 2008 (it was released at the end of 2007). It has a lot of Vonnegut and a touch of William Gibson, and has to do with the search for extraterrestrial intelligence, evangelical and new-age cults, culture wars in cyberspace, AI networks, and the near future in "post-America."
You can read more about it here:
The Big God Network (Interactive MySpace Page)