I haven't read Celestine Prophecy yet, but it's definitely on my list. The author James Redfield attended the church I have started attending during the time he wrote the book. He wrote a note about it on the church's web site http: //unitybham. org/unity_jamesredfield.html. (remove the space before the slashes. It wouldn't include the link unless I put it in.)
Have you read Celestine Prophecy? What did you think about it?