For a role reversal sado-masochistic erotic art-or-porn film,try Ai No Corrida,1976 by Nagisa Oshima.The Spanish film Belle Epoque is much softer,an enjoyable tale of a young man who enjoys the hospitality of 4 pretty sisters.Festen and Mifune are excellent recent Danish films,though not erotic.Show me Love is a lovely little Swedish film about 2 teenage lesbians-insightful and uplifting.