Having produced one third of Nas' generation-defining Illmatic, Large Professor's place on the pantheon of hip-hop heavyweights is already etched in stone. When you add in his groundbreaking debut as a member of Main Source -- or the fact that he has collaborated with luminaries like Pete Rock, A Tribe Called Called Quest, Busta Rhymes, Mobb Deep, Masta Ace, and Big Daddy Kane -- it's crystal clear that the man's influence towers high above the history of the hip hop.