This puzzle is more of a contest. Try and come up with the most famous and recognizable film tag line. My pitch is from the Ridley Scott / Sigourney Weaver movie Alien:
IN SPACE, NO-ONE CAN HEAR YOU SCREAM.
I reckon that this is a good entry because:
A) you'll have heard of it
and

you'll have a good chance of associating it with the movie ALIEN.
Any other entries which score highly on the A- and B- ometer?