Jerry appears to be a lunatic during the first few scenes of the film and it is actually difficult to determine whether the stories that he relates to are true or whether he is just another crazy person that one might find during a casual taxi ride. The most impressive thing about both of these characters is that they do not seem capable to do a great deal of things in order to defeat their antagonists, considering that Langdon is just a simple teacher in charge of putting down some of the most evil individuals belonging to the feared Illuminati group and that Jerry is a taxi driver who wants to fight agencies like NASA and governmental agents who are in charge of one of the most intricate conspiracy in all of history. Even with this, both of these characters manage to complete their missions successfully as they come across allies and as they become more and more passionate about their duty. One can claim that, to a certain degree, the Da Vinci Code fails to impress audiences because of the rather predictable storyline. While most viewers are unlikely to associate Teabing's character with 'The Teacher', it is obvious from the very first scene when she appears that miss Neveau is about to make an intriguing discovery. This female character appears to develop in a constant manner as she becomes more and more accepting regarding the role that she

While both movies have some of the greatest actors ever as protagonists, Conspiracy Theory makes it easier for Mel Gibson to put across his talent. Tom Hanks seems, at times, to be uncomfortable with the role that he is playing and it actually appears that he is not very good at playing the adventurous teacher who can get out of every situation by punching and kicking when he is not using his intellect. Viewers are likely to feel that Gibson plays a more realistic role and to sympathize with the actor as a result of the suffering that his character is going through. In contrast, Hanks' character rarely manages to get audiences to support him as he embarks on a new adventure and generally influences people in thinking that the challenging events that he goes through are not really that difficult.
Works cited:

Dir. Richard Donner, Conspiracy Theory, Warner Bros. 1997

Dir. Ron Howard, the Da Vinci Code, Columbia Pictures, 2006