Clips continue to surface from Ice-T's Something From Nothing: The Art of Rap documentary. Earlier, we posted an Eminem acapella, then a clip of Kanye West talking about his written raps on My Beautiful Dark Twisted Fantasy, and now, here is a video of Nas dropping an acapella verse for the camera. Of course, Nas spits nothing but realness. Watch above. And below, Nas answers Ice-T's question: "Why do you think rap isn't respected?"