About time we had one. Perhaps not a general favorite among metalheads, but I know there are hip-hop fans here. Best documentary I've ever seen about rap: The Art of Rap, made by Ice-T. Part 1 Part 2 What's great about that doc is that Ice-T approaches it from the musician's POV. It's about how great rappers write their rhymes and developed their flow. Includes freestyles by most of the rappers interviewed. I was especially impressed with Kool Moe Dee: Here's one of his older songs. Great stuff.