Close Encounters of the Third Kind was released in 1977. It led to greater interest in aliens and an increase in the number of UFO believers.
Inspector Graham Stevens had a blown-up still from Close Encounters of the Third Kind in his office. It depicted lights flying over a group of people holding up signs that said 'Stay and Be Friendly'. (PROSE: Cat's Cradle: Witch Mark)
The film was mentioned in a document on the wall of Sarah Jane Smith's attic at 13 Bannerman Road. (TV: Invasion of the Bane)