an Boyle, 48, who was discovered on Britain's Got Talent, is an example of why age should be irrelevant, said Cowell, a judge on the British show he created and executive producer of America's Got Talent on NBC. Boyle became an unlikely sensation and released one of the year's top-selling CDs.Rice would not speculate on possible replacements for Cowell on Idol.We have to take our time on tha