I did a search and I saw a few threads for the book but none of the movie....
New trailer for the Da Vinci Code
My reaction to the trailers to-date is that like the casting appears to be very good. The characters really do spring to life. Tom Hanks, Alfred Molina, Paul Bettany, Ian McKellen, Jean Reno ... excellent ensemble. Should be a very entertaining movie. I'm looking forward to it.
The other thought I had is that my concern last year would be that the producers would downplay the controversial aspects of the book to appease religious interests. I'm glad to see they don't appear to have.
It's interesting that Ian McKellen gets to play Teabing. I remember him talking about defacing Gideon bibles in hotels - ripping out the page in Leviticus which condemns homosexuality. He probably relishes the role.