The man who inspired Tom Hanks' character in The Da Vinci Code has described the film as "over the top". Author Dan Brown based professor ROBERT LANGDON on longterm pal and symbology expert JOHN LANGDON. After watching the movie, Langdon claims it is "unbelievably rich", but insists it isn't as good as the novel. He says, "I'd give it a B. (It is) almost over the top."