Tenacious D In The Pick of Destiny (2006)

Jack Black and Kyle Gass star as would-be rock icons who set out to prove they're the greatest band in history. Dreaming of becoming a rock god, Midwesterner JB (Black) heads to California, where he crosses paths with idler KG (Gass) -- a fortuitous meeting that gives rise to musical duo Tenacious D. But to ensure their place in the pantheon of rock, they'll have to pinch a fabled guitar pick that endows its owner with singular talent.