Thanks for the headsup on the book. I'm always fascinated by North Korea, The Most Insane Place On Earth (I call it Wackyland.)
A video recommendation (the other parts are there, too):
Actually, I see that there are several of the documentaries on NK on Youtube, but that was the one that came to mind (I had seen it outside of Youtube. It should be watched.)
Also worth reading,
this graphic novel.