Sans Soleil (1983)

Chris Marker's Sans Soleil is the most intellectually ambitious documentary on this list, a globe-spanning 1983 essay film that meditates on memory, time, and the nature of images through connections between Tokyo, Guinea-Bissau, and Iceland. This hypnotic travelogue defies documentary conventions, weaving together 154 minutes of footage with poetic narration that challenges the viewer's perception of reality. While it lacks the mass appeal of 13th, which gained millions of Netflix streams, Sans Soleil's influence on avant-garde cinema is unmatched—its fragmented structure and philosophical depth have inspired filmmakers for decades. Marker's use of manipulated images and shifting perspectives remains a benchmark for experimental documentary form, costing virtually nothing to produce yet leaving a profound legacy.