It's been quite a busy year for Foo Fighters' frontman Dave Grohl, having unveiled his music documentary What Drives Us as well as his debut book The Storyteller: Tales of Life and Music. Then there's ...

Foo Fighters and Nirvana legend Dave Grohl just might be the most heartwarming rock musician in the world and here, we look back at some truly and totally unforgettable moments from over the years.