Paul McCartney And Dave Grohl Performed Beatles' Classic 'I Saw Her Standing There'

What would it sound like if the Beatles reached nirvana? Probably a lot like Dave Grohl performing a Beatles song with Paul McCartney. During McCartney's show at London's O2 Arena on Saturday night, the former Nirvana drummer joined the former Beatle for a performance of "I Saw Her Standing There," from the Beatles' debut album, "Please Please Me." This isn't the first time McCartney and Grohl have performed the song, though. The two previously played the Beatles' classic at the 2009 Grammy Awar...