If libraries gave out Oscars, I'd nominate The Da Vinci Code for Best Picture.
I thought the film was plenty fun, but had the same flaws as the book, including weak dialogue. At a critical point, aboard a public bus in downtown London, Tom Hanks actually exclaims: "I have to get to a library! Fast!" (Google News. Technorati.) I laughed aloud, and would have cheered, had it not been for the utter sanctity of darkened theatres.