His latest project. youtube.com/watch?v=e05H80-k0mY 23-minute, one-man-band instrumental recording on which Grohl plays all seven instruments on the track, all live.
Embedded link: Or Skip the Intro Is it just me or does it sound a little like Blue Man Group around the 12 minute mark?
Ol' Davey boy has got some talent, that's for sure. Remember seeing him live as the main act of a Motorhead, QOTSA & Foo Fighters gig - that was a GOOD show.