It's really hard to believe that Paul McCartney had never appeared at the Ed Sullivan Theater since the historic appearance of the Beatles in 1964. After what has happened recently, it's nice to see an aging rocker still going strong.

Jeffrey R Staab/CBS via AP
Paul McCartney, center, performs on the marquee of the Ed Sullivan Theater during a visit to the "Late Show with David Letterman." Wednesday July 15, 2009 in New York. It was McCartney's first visit to the Ed Sullivan Theater since his historic performance as part of the Beatles in 1964.