Foo Fighters and Joan Jett: 'Bad Reputation'

Credit: Jeffrey Ufberg/WireImage

True fact! Scientists have determined that it is physically impossible to rock harder than Dave Grohl and Joan Jett do in this killer YouTube clip, which features the duo tag-teaming her classic jam during a recent Foos gig at Madison Square Garden.

Video: Foo Fighters and Joan Jett Perform 'Bad Reputation' on 'Letterman'
Foo Fighters and Bob Mould on 'Conan'
Foo Fighters Prank Protesters
Foo Fighters in Porn Parody
The 100 Greatest Guitarists of All Time, David Fricke's Picks: Joan Jett
Joan Jett on 20 Years as Rock's Toughest Woman