Dear Pyongyang (2005)
Dear Pyongyang is a documentary film by Zainichi Korean director Yang Yong-hi (Korean: 양영희, Hanja: 梁英姬) about her own family. Shot in Osaka Japan (Yang's hometown) and Pyongyang, North Korea, the film features Korean and Japanese dialogue with subtitles. The US release also has Korean and Japanese dialogue, but with added English subtitles. In August 2006, Yang also released a book in Japanese under the same title expanding on the themes she explored in the film.
More at Wikipedia.