There's a documentary on an American journalist visiting North Korea on VBS.tv
It has 14 parts but each part has a length between 3 and 6 minutes. You can even skip the add that shows up before each video.
It's quite interesting.
http://www.vbs.tv/video.php?id=1438428757
Part 13 is on the mass gymnastics/Arirang games
http://www.vbs.tv/video.php?id=1454975007
Tell me what you thought about the documentary.