The document discusses the various purposes and types of documentaries. Documentaries can aim to document, educate audiences about famous people's lives, entertain, inform, persuade, critique or observe real life. Key documentary types discussed include fly-on-the-wall which films discreetly, fully narrated which uses voiceover, mixed which uses interviews and narration, and self-reflexive where the filmmaker addresses the camera. A docu-drama reenacts real events but can only offer a fictional interpretation.