Tenacious D, 'Tenacious D' (2001)
Dave Grohl has been intimately involved with the D ever since Jack Black and Kyle Gass founded the comedic rock group in the late Nineties. In addition to drumming on all three of the band's studio records, Grohl has contributed vocals and even acted as the devil in the music video for the group's "Tribute." "So hard to play drums when you're laughing hysterically and tears are rolling down your checks," Grohl said last year. "Maybe the hardest gig ever."