Kim was said to be a huge film fan, owning a collection of more than 20,000 video tapes and DVDs. His reported favourite movie franchises included James Bond, Friday the 13th, Rambo, Godzilla and Hong Kong action cinema, with Sean Connery and Elizabeth Taylor his favourite male and female actors. He authored On the Art of the Cinema. In 1978, on Kim's orders South Korean film Director Shin Sang-ok and his Actress wife Choi Eun-hee were kidnapped in order to build a North Korean film industry. In 2006, he was involved in the production of the Juche-based movie The Schoolgirl's Diary, which depicted the life of a young girl whose parents are Scientists, with a KCNA news report stating that Kim "improved its script and guided its production".