offbeat, often independent (non-Hollywood) counter- culturalcult films exhibited at theatres for late-night shows - sometimes involving audience participation; appealed to various small segments of niche audiences with different tastes; these films (originally sexual thrillers, slasher flicks, etc.) were often box-office bombs upon initial release, but then gained a faithful following; the phenomenon began in the early 70s, then mostly disappeared in the 80s, but has recently been revived.