Film Opening Research

In films there are a sequence of things that happen before the actual film begins. These are the actors appearing in these films, the company idents, the title of the film and many more things involved in the film making process. Some movies however don't show any of these until the actual movie has started, for example a movie that I have done is called a knights tale and it does this. In the movie it starts with a few lines of text then the film starts without naming actors or anyone involved in the production of the film, only after the movie has started do the actual film opening begin.
I did film opening research on three films, they are posted below.

Spiderman 

I Robot 

A Knights Tale