There's a reason why Problem made our list of best new L.A. rappers to watch out for. In the first official video from his recent Welcome To Mollywood mixtape, he shows off exactly what makes him stand out among the crowd of new faces in the hip-hop scene. Over the massive, stomping production, Problem effortlessly cuts through with his agile flow and precise way with words. It's easy to see why he's a DJ favorite on the West Coast.