A list of non-pornographic films which include hard-core images and have received either mainstream or arthouse distribution.
Not listed on Letterboxd:
Through The Looking Glass (Jonas Middleton, 1976)
Annabelle Partagee (Francesca Comencini, 1990)
Cling Film (Anna Thew, 1993)
Skin Gang (Bruce La Bruce, 1999)
KI (Karl Lemieux, 2001)
Water In Milk Exists (Lawrence Weiner, 2008)