R&B superstar Kanye West made a triumphant return to the top of the Hip-Hop charts this week as his latest single "Mercy" featuring Pusha T and Big Sean bumped Usher's "Climax" from the No. 1 position on Billboard's R&B/Hip-Hop Songs chart.  The track is West's sixth No. 1 on the Hip-Hop chart overall, and Big Sean's second.