About Jack: From 1988 to 2000 Jack Hafferkamp published/edited Libido: The Journal of Sex and Sensibility with Marianna Beck. Since then he has operated Libido Films, which specializes in gender-equal explicit erotica. Libido films have been honored at the annual Erotic Awards in London and featured at New York's Cinekink festival. Jack holds a Ph.D. in Human Sexuality, specializing in Erotology, which is the material culture of sex.