Yes, I read the book; who hasn't? When I first heard that The Da Vinci Code was "highly controversial" I knew that mean it would contain some kind of factual error regarding Christianity, and that this would be a central point. Still, I figured, "big deal" and ignored it.
Frankly, the written version wasn't all that wonderful, and I doubt it would have sold as many copies if people hadn't made such a fuss about it. Ever heard of the Streisand Effect?
Regarding "What is the big deal, anyway?", the problem isn't The Da Vinci Code but how some people react to lousy history as though their faith depended upon a novel. If you are a Christian and you are reading this, do me a favor (in fact, do Christ a favor): don't get too worked up. Yes, read the book. Yes, make sure you know where it is wrong and know how to answer it. But don't have a cow.
Sure, Dan Brown actually believes what he writes in the book is true, but he does terrible research for his books; Cathy is reading Angels and Demons and Brown has American Indian beliefs all wrong. The sheer amount of bad and confused history in TDVC actually gave me a headache. He gets dates, places, and events mixed up and conflated, and he does bad math on top of that. Is it too much to ask for people to do a little homework? To quote Tom Hank's goofiest line of the movie, "I've got to get to a library -- fast." I only wish Dan Brown had spent more time in one.
In hearing and reading the movie's reviews, it seems that the critics find the movie version a yawner. Even the positive reviews sound weak, and I found one clearly negative review so funny that I couldn't finish reading it out loud to Cathy.
For the record, I'm going to wait for the DVD version. I don't see the point in spending the money to see a movie nobody recommends and the plot of which follows the book religiously (haha). I didn't like the book enough to pay to be bored by it on screen.