The subliminal film still of an erect penis [1, nsfw] in the MTV-style film montage at the beginning of Ingmar Bergman’s Persona (1966) appears to have been imitated [2, nsfw] in the film Fight Club (1999). The difference is that in Bergman’s Persona the film still is several frames long, clearly visible to the naked eye, whereas in Fight Club it is only one frame long, it can only be consciously seen by pausing the video.