While not a single film, you must watch The Cow (1969, Dariush Mehrjui) and The Cycle (1975). These vintage Iranian movies were the original "blue films" in the sense that they were banned, smuggled in suitcases, and screened in basements. Without them, Hadi Ahmadi’s 2021 project would not exist.
Summer of Soul (...Or, When the Revolution Could Not Be Televised) : A 2021 documentary featuring unearthed footage of the 1969 Harlem Cultural Festival mallu reshma blue film 2021
: The film gained notoriety for being rejected by several mainstream festivals due to its graphic content and "unsettling" themes. Classic "Blue Movie" Context While not a single film, you must watch