Darren Aronofsky owns the American filming rights to this movie, which he purchased for $59,000, just so he could film the now infamous "bath scene" with Jennifer Connelly in his own film Requiem for a Dream. The staged rape scene in Perfect Blue also inspired a scene toward the end of Aronofsky's film in which a group of perverted men circle around and cheer on a vulgar sexual event.
The "Big Body" pizza box in the infamous stabbing scene usually gets a few chuckles from English-speaking viewers, who are no doubt thinking about the food's fat content. However, "Big Body" is actually an homage to Susumu Hirasawa (who would later compose music for Millennium Actress and Paranoia Agent, also by director Kon) and his electronically band "P-Model." Big Body is the name of their tenth album, released in 1993.