Hip-Hop Documentaries (Any Recommendations?)

[Be@t Bangerz Fan]

From a production standpoint, what are some of the (must-see) Hip-Hop documentaries you guys have seen that you'd recommend to others like myself? So far, I've seen...

1. Beat Kings: The History of Hip-Hop (Documentary)
2. The Art of Organized Noize (Documentary)
3. So You Wanna Be A Producer (Documentary)

Out of those 3, "The Art of Organized Noize" is my favorite. I've watched it 3x already.