Lynn Sherr, the award-winning correspondent for ABC TV’s 20/20 newsmagazine, went to Africa for the first time in 1973 and fell in love — with giraffes. “They were a dazzling, unexpected revelation: gawky, graceful anomalies; cool, gentle giants dressed in golden, stained-glass coats. And when they ran, they seemed to float. I was hooked.” Journey to Kenya and South Africa, and to an American zoo that is the giraffe breeding capital of the Western Hemisphere, for a revealing look at this powerful, captivating creature when Ms. Sherr hosts Tall Blondes.