it is kind of nice, because it is challenging me a little bit to go there and be ready to open the festival in a way, at least open the dramatic competition.- TWENTY FEET FROM STARDOM, U.S. documentary competition: Morgan Neville, whose 2011 Sundance entry Troubadours" centered on superstars such as James Taylor, Carole King, Jackson Browne and Joni Mitchell, now looks at the hired hands - backu