I loved the Da Vinci Code - one of the few books I've read in years that was "unoutdownable" - but like Mick I thought the ending was a bit wimpy.
Iread DVC before I read Angels and Demons (the first in the series), and while I enjoyed A&D it was a lot slower to get going....
there are a few sites out there where you can "break the code" by answering clues based on things in the book - unfortunately a lot of them have to do with the cover which was obviously different for the Oz publication....