Thanks to Patrick for introducing me to this guy. He's now on Kanye's G.O.O.D. Music label, but is also notable for many collaborations with A Tribe Called Quest. He's got great flow and is just all around an enjoyable listen.
Kweli began his career as part of the duo Black Star with Mos Def. Now solo, Kweli has even played stints on Warped Tour, showing that he can appeal to a wide variety of audiences.
Brite One is the rapping moniker of Daryl Palumbo, singer for Glassjaw, Head Automatica, and a few other projects. Palumbo is actually a very good rapper. There aren't a lot of tracks out there, but what is there can be downloaded at the page linked below.