I've heard that there are some western films that are permitted in North Korea, what would those be?
Yes, there are some Western/non-North Korean films that are legally available in North Korea. The vast majority are animated films such as the Disney classics, Pixar movies, etc because the government views these as relatively harmless entertainment targeted at children and North Korea has world-class animation capabilities. Non-political Russian, Chinese, and Indian films are also readily available at movie rental kiosks throughout North Korea. KCTV will also occasionally shows foreign films on the weekends for language education, and although not film-related, there is a dedicated sports channel that broadcasts re-runs of La Liga and Premiership football matches nationwide.