Uhm, not to be a bitch or anything, but are there actually people who are confused as to whether or not The DaVinci Code is fiction or non-fiction? I mean, enough people to justify the fact that I just flipped by a "news" show on the matter? Are we, as a society, really this dumb?
Here's a rule of thumb: if something's in the bookstore or library in the fiction section, it's a fiction book; if it's in non-fiction, it's a non-fiction book. Unless it was written by Ann Coulter, of course.