I have been working as a consultant on a National Geographic Television documentary on the yakuza since the summer of last year. I resigned on February 24th. I also asked that my name be removed from the program.
http://www.japansubculture.com/2011/03/why-i-would-rather-work-for-the-yakuza-than-national-geographic-television-my-resignation-apologies-and-words-of-caution-to-anyone-involved-with-production-ngt%E7%95%AA%E7%B5%84%E3%81%AB%E9%96%A2/
Joshua "Jake" Adelstein is an American journalist and writer who has spent much of his career in Japan covering vice and organised crime. For 12 years, Adelstein was a crime reporter for the Yomiuri Shinbun and was the first American to work for a Japanese newspaper as a Japanese language reporter. He left the newspaper after receiving threats against his life and family and was subsequently an investigative reporter for a US State Department investigation into organised crime in Japan. He has written the book Tokyo Vice about his years in Japan and its underworld.