I like his books as fiction, but he tends to be incorrect about a lot of actual historical information, and it annoys me sometimes when people think everything he writes is completely accurate.
But anyway, my one friend and I read them last year, and we were somewhat obsessed with them for a while too. xD
And, I'm not sure if this is completely on-topic, but there's a really funny parody of The Da Vinci Code called The Albino Code here:
The Albino Code -- "Echo Not a Lie, DB."