Many Hollywood stars retire in the oasis of Palm Springs, California where they while away their golden years splashing paint on canvases, taking leisurely strolls, playing the piano, and flipping through the pages of magazines. Such is the life of 71-year-old Cheeta, the chimpanzee of Tarzan fame who celebrated his birthday a month ago. "He's the world's oldest chimp and in excellent condition," said Dan Westfall, who cares for Cheeta and several other retired showbiz primates at the Cheeta Primate Foundation in Palm Springs. Cheeta's "world's oldest" title is noted in the Guinness Book of World Records. Chimpanzees in the...