The new GSS data (H/T: 538) for 2008 is released on a preliminary basis, and since I organized some "no religion" statistics a little while back I thought I'd throw this one in: about 1 in 5 of us don't take the Bible seriously as God's book.
16.2% outright call it a book of "fables, legends, history, and moral precepts written by men" while 1.2% say "other" and 1.6% "don't know". It's a good sign, and let's keep hoping that number increases with time.