Apparently Constantine asked Eusebius to provide for a number of normative "Bibles," which was just one step in the canon's settlement.
This is what I've found also. In just a single website (as I've only started looking into this) it mentioned that Eusebius was commisioned by Constantine to print 50 bibles. So he decided what was in those 50 (pretty much what books had been decided up until then, I think). I've read that the OT Apocrypha was excluded and that there was some discussion about 2 Pet, Hebrews, the Johns, Jude and Revelation being included in the NT.
What started me thinking about this wasn't Dan Brown, either (although I've read DVC twice ). I'm still a "babe" in this world outside of JWville, so now that I've allowed myself to question, I question EVERYthing, down to the basics like the Bible. I'm at a loss on what to really believe anymore, so simply doing lots of research all over the place. My thoughts about the Bible right now is that if there are some books left out, then are there some that shouldn't be IN? And why should I base my life, faith, beliefs on something that isn't complete or completely true...?
~merfi, of the Hugely Skeptical and Cynical Class :)