These are some facts that i have put down. they appear throughout. These are things that i wanted to put into the script. not all of my facts are down here, as i may have written something down that i interpenetrated straight from the source. these are a direct quote of the fact from the website.
Trailers or previews are film advertisements for feature films that will be exhibited in the future at a cinema, on whose screen they are shown. 
this is the list of all the trailers mentioned and a link to see them. they all have the title of the movie, the year and what i could and did use them for. also after it is the bibliography.
Filmography of trailers
A good example of special footage, that was never intended to be in the film, being used for promotion.
A good example of old style trailers.
Dr Strangelove (1964)
The first to use non-linear style editing for a trailer.
La Dolce Vita (1960)
The comedian (2002)
A trailer making fun of voice work.
Terminator 2 (1991)
Cheaper by the dozen (2003)
2 different movies showing the flexibility of voice over
Tenacious D (2006)
A stupid voice over
Greatest show on earth (1952)
Very generic old style trailer.
Pineapple Express (2008)
Good use of music
The Warrior’s Way (2010)
A trailer with all mentioned elements
Billy Jack (1971)
All accessed on the 04/04/11.
History of Movie Trailers
Wikipedia on Movie Trailers
Movie trailers rank #3
Coming attractions: Reading American Movie Trailers.
Author: Lisa Kernan,
Publisher: University of Texas Press
Publish date: 11/2004
Andrew J. Kuehn biography