It's hard to believe Paul McCartney - the mariachi-singing ex-Beatle - is turning 70 years-old next month. After a three-hour performance in front of 200,000 people at Mexico City's historic central square, the Zócalo, the ex-Beatle proved that not only is he as talented as ever, but he is as eternally charming and energetic as one would expect from the former mop-topped demigod. McCartney amped the crowd at the Zocalo... see more