The article examines ten 1970s films that remain divisive despite, or because of, their ambition, controversial subject matter or unconventional creative choices. It argues that some works once dismissed by critics or audiences have since gained defenders, while others still provoke disagreement over their quality, intentions and moral implications.

– *Exorcist II: The Heretic* was widely derided for its psychedelic, confusing approach, though recent reassessments—including praise from Martin Scorsese—have presented it as an intriguing technical failure.
– *Star Trek: The Motion Picture* disappointed fans expecting a fast-paced adventure, but supporters regard its slow, existential style as an ambitious science-fiction film.
– *The Boys From Brazil* mixed Nazi conspiracy, science fiction and horror in a way that left audiences unsure whether it was serious drama or entertaining schlock.