This document outlines six modes or genres of documentary filmmaking proposed by Bill Nichols: expository, observational, participatory, reflexive, performative, and poetic. It provides examples and descriptions of each mode. The expository mode uses voiceover narration to directly address the audience. The observational mode aims to objectively observe reality without influencing it. The participatory mode includes the filmmaker's visible participation. The reflexive mode acknowledges the construction of the documentary. The performative mode emphasizes the filmmaker's subjective participation. Finally, the poetic mode uses non-linear, artistic, and subjective techniques of expression over objectivity.