Lateef the Truth Speaker is an MC out of East Oakland who was once part of Latyrx with Lyrics Born and the Maroons with Blackalicious' Chief Xcel. He has been also doing things with DJ Shadow and Z-Trip. This track is a freestyle by Lateef on KZSU Stanford the DRUM show.
Make sure to support your local Bay Area artists. If you like what you hear, buy Lateef's album. Dude is dope. Here is Lateef's Myspace page.