Foo Fighters frontman Dave Grohl has had plenty of opportunities to perform with Paul McCartney. But that didn't stop him from acting like a teenager as he joined Sir Paul's band for a raucous version of "I Saw Her Standing There" Saturday night at the O2 Arena in London.
The gig was McCartney's first show of a two-month summer tour that will see him performing in his hometown of Liverpool, England, as well as Amsterdam, Paris, Philadelphia, and Chicago.