Broadway, like everyone, loves Reba McEntire. The redheaded Oklahoma firebrand took on the one-night-only concert role of Nellie Forbush June 9, 2005-- the role Mary Martin immortalized in the 1949 Rodgers & Hammerstein classic, South Pacific-- and the rialto's toughest critics, led by The New York Times' Ben Brantley, instantly surrendered. "Open-voiced and open-faced, she was born to play Nellie," Brantley wrote of the Carnegie Hall benefit performance,