Dave Grohl is quite arguably the hardest working man in Rock "N" Roll , having laid down drum tracks for everyone from Paul McCartney to Nine Inch Nails . Grohl is a self-taught drummer/guitar player and high school drop-out who's most notable work includes playing with Nirvana, Foo Fighters , and DC Hardcore band Scream . He really isn't your average drugged-out, middle-aged Rockstar . Since Foo Fighters went on a hiatus in October 2012, Dave Grohl has been hard @ work on a number of interesting side projects; He'll be filling in as Queens of The Stone Age 's temporary drummer on their upcoming album, might "get back together and do stuff" with Them Crooked Vultures , has been tirelessly working on his directorial debut... centered around infamous Sound City [studio], recorded a Rick Springfield/Foo Fighters track, playing that 12-12-12 Hurricane Sandy relief concert, and recently filled in for buddy Chelsea Handler on her talk show, Che...