Research in to the order of titles in title sequence- 1

Opening sequence to- Enemy of the state.

The first thing we see in this opening sequence is the title of the film, in large font in the center of the screen, making us aware of what we are watching from the start.  The next two credits are for Will Smith and Gene Hackman, who's names are in a big font, again in the center of the screen, thus highlighting their importance, the also get a lot of screen time between their credits.

Then the less significant actors are shown, in a smaller font, with less screen time and placed more in the corner of the screen, showing they are not as significant to the film as the previous people who were credited are.

Further into the sequence, the even less significance characters, start to be credited in pairs, and further into the corner of the screen.

Then all the members of the production crew are credited starting with the casting, and ending with the director. It seems as if the more important production roles, such as producers and the writer, are credited at the end of the sequence which i find interesting as i would expect them to be first.