ALIEN 1979:
"In space no one can hear you scream"
Props to Ridley Scott for giving us a truly great Alien horror film.
The trailer itself says it all. It plays with sound and fast paced images to make the viewer feel uncomfortable while viewing, without showing a single alien.
Sadly enough Carpenter pulled a few ideas from the trailer stated below in the USP and without a shade of coyness attempted to trump it.
POLTERGEIST 1982:
"It knows what scares you"
A true ghost story within the confines of the stereotypical suburban house. The main selling and marketing points for this one is the realness of it.
The beautiful home and the green grass is the American dream, but now that dream has become a nightmare.
Also it is Steven Spielberg. They thought it was important to put that in the trailer... Which it absolutely was. producers knew even at that time the his hands were made of gold.
THE EVIL DEAD 1981:
Starts off a very similar way to The Thing: with a recorded message about the scariness that is yet to come.
The Evil Dead's marketing went for the shock factor, with all of the blood and guts and gore that was shown in the preview. It attracted a specific kind of audience.
Also the film had a very graphic novel feel to it. Almost comic book and grotesque humor to it.