Karriem Riggins.
Karriem Riggins is a jazz drummer, hip hop producer, and sometime rapper. Riggins has worked on the production side of things for artists like The Roots, Erykah Badu, J Dilla, Talib Kweli, Kanye West, Slum Village, Common and Madlib. When J Dilla died on February 10, 2006, his last album - The Shining - was only "75% complete". Riggins finished it with the help of J Rocc posthumously.
Last year he stopped by at Benji B's show on BBC Radio1 and laid down an inspiring 30 minute mix on air. Download it here.Couple of Riggins' productions, that you'll probably be familiar with: Here he's live at Hella International 2008