The Blair Witch Project
The Blair Witch Project is thought to be the first widely released film marketed primarily on the internet. The film's official website featured fake police reports and 'newsreel-style' interviews. Due to this, audiences and critics initially thought it was an actual documentary about the 'missing' teenagers.  These augmented the film's convincing found footage style to spark heated debates across the internet over whether the film was a real-life documentary or a work of fiction.