I saw The Da Vinci Code last night on a big, big screen. Ebert gave it 3 of 4 stars. I would give it 3.5 or 4 of 4.
I've read some review such as Shawn Levy's review in The Oregonian gave it a B- and he complained the movie did not move quickly enough. I also read that some actors just "mailed in" their performances, but at least not to the extent that I noticed.
I thought the movie moved well. Details were cut from the book, obviously. Some dialog and scenes changed a good bit, especially at the end I think. I read the book over a year ago.
The book really should not have made a good movie, I thought at least when I heard it would be done. The book is too much talking about the past and puzzle solving. As it turned out the director, scenarists, and effects people handled that well, much better than I thought it would be presented.
I think the movie has more humor than the book, and it works. I think the movie is a bit more conciliatory than the book to traditional Christians and even the Opus Dei nut jobs. Evangelicals generally will not be happy of course. Anyway they're busy drinking really bad punch out of really small glasses and eating really bad cookies, at their church listening to an "expert" arm them with the facts they need to convince their friends that this movie is just fiction.
Well, it's good fiction, better than most stories in "The Bible". I am going to see it again this weekend if possible. The sun is shining more than expected though.