Intertextuality is a term to describe the visual reference between films. Quite literally, films 'borrow' from each other, and you may recognise certain camera angles, aspects of mise en scene, snippets of sound or methods of editing in some films that you have seen in others.
The movie 'Psycho' a classic thriller which has the famous shower scene has inspired other thriller movies to have some ideas and techniques of the film. Famous films like 'What Lies Beneath', 'Fatal Attracton' and 'The Stepfather' has used ideas from the film Psycho which makes the scene more traumatised to the audiences. The movie Psycho is about a woman in the shower when suddenly a man approaches the shower curtain with a knife and draws the curtain, stabbing her constantly.