I found this website very good and useful for media. From this website I've learnt that the first few minutes of a film need to be exciting and gripping to grab the audiences attention or they will assume the rest of the film will bore them.
Also that the opening credits need to be imaginative as the first few minutes are vital.
It also talked about how many credits can tell a story:
I found these opening credits on this website especially imaginative and exciting, my group are thinking about coming up with something similar.
This is the link to the website which includes directors research and their interviews:
http://www.school-video-news.com/index.php?option=com_content&view=article&id=453:the-art-of-the-title-sequence&catid=44:edit-post-production&Itemid=111
Also here is a another link to 'The Art Of the Title Sequence.'
www.artofthetitle.com