Pietro papadimitriou audience research for film openings, what people like and what people don't.

from my brief research it was clear how there are some key elements that people like in film openings and some other key elements that people hate.

people generally like:

• good CGI graphics (especially in comedy movies or animated movies)
• good music ( the music must match with the kind of movie is expected to see)
• good acting ( if there is a presentation of the protagonists during the opening, they must be able to show their personality and briefly their role)
• Enigma codes ( for example the trailer of se7ven)

this is what people dislike:

• really long openings
• boring openings
• the title at the end
• constant credits

here is an example of a great film opening.
http://www.youtube.com/watch?v=gaLDyrun_Cc