17. Full Metal Jacket (1987)
Another iconic Kubrick poster, snatched up by cult followers, showing that many of who were sent into this war, were nothing but desperately patriotic and bloodthirsty young boys.
16. Metropolis (1927)
A very early entry from Fritz Lang and a commentary on the working class versus the rich, with imagery very often emulated in popular culture today.
15. Jaws (1975)
Everybody expects Jaws to be on a list such as this and, of course, it deserves its place. Sometimes lack of subtlety can be cheesy and over the top, but this image is composed so well that it's undeniably one of the greatest of its kind.