tenacious d represent in the pick of destiny tell the fictional tale of the formation of the band tenacious d and their quest to find the pick of destiny and a guitar pick with supernatural power make from the tooth of satan himself ( play by dave grohl ) . jb ( jack black ) and kg ( kyle gas ) and join together by fate and must travel to the rock n roll museum and steal the pick of destiny to become the great band on earth . the movie be hilarious and delivers non stop laugh . jack black and kyle gas work perfectly together and have be real life friend and co worker for over 20 year . the film be in part and a musical . all ( or most ) of the music be write and perform by the d. all of the song be new material and many of them be classic . the soundtrack be definitely worth check out . this film will be mostly appreciate by fan of tenacious d and but if you be not a fan of the d and i still think you will enjoy the movie . if you be a fan of the d and then you must see this movie . the act isn not as bad a you may think and and the laugh and crudeness never stop come . i highly recommend this movie to anyone look to get their sock rock off and laugh as hard a they have laugh in a long time . look out for cameo by dave grohl and ronnie james dio and meatloaf and ben stiller and amy poehler and tim robbins and john c. reilly and and neil hamburger . also and stay tune for an extra scene after the credit .