| Sub-genre | Focus | Example | |-----------|-------|---------| | Biographical | Life of a performer/executive | Amy (2015) | | Production diary | Making of a specific work | Hearts of Darkness (1991) | | Industry exposé | Corruption, abuse, inequity | Leaving Neverland (2019) | | Historical retrospective | Studio or movement history | The Movies (2019) | | Fan culture | Fandoms and their impact | Trekkies (1997) | | Technology/crisis | Streaming, piracy, COVID-19 | The Last Blockbuster (2020) | : Who Needs Sleep