Hip hop speaks truth from the streets, but why should those streets be limited to Brooklyn instead of the tech corridors of Silicon Alley? There's where nerdcore comes in, and thankfully there's a new documentary "Nerdcore Rising" that spotlights this emerging geekish rap genre. In the following clip, hear from Weird Al Yankovic, comedian Brian Posehn and an assortment of the leading nerdcore hip hop artists who take us inside the budding scene. There's no release date yet, but the doc just made SXSW and will be screening at AFI Dallas and the Atlanta Film Fest.