The 
  winners of the 2006 Book Sense Book of the Year Awards -- recognizing those 
  titles independent booksellers most enjoyed handsellingduring the past year 
  -- as voted by the owners and staff of American Booksellers Association member 
  bookstores are:
  Adult Fiction: The Historian: A Novel by Elizabeth Kostova 
    (Little, Brown)
    
  
  Adult Nonfiction: Freakonomics: A Rogue Economist Explores the 
    Hidden Side of Everything by Steven D. Levitt and Stephen J. Dubner (William 
    Morrow)
I wish the nonfiction book had been something different; I've already read Freakonomics.