In the second worst surprise (oh hai, Lars) of SXSW, a denim-clad Kanye West served as ringleader of the G.O.O.D. Music showcase at Levi's/FADER Fort Saturday night. "It feels so good to rock for you tonight," he told a packed tent at the start of a three hour set that alternated between his hits and the songs of 'Ye protégés ...