There's a full-length documentary on the release of 2008's "Tenacious D: The Complete Master Works 2" that's essential viewing. It examines the period of fame for the musical duo, with Jack Black and Kyle Gass struggling to deal with an imbalance in media attention, especially as the build up to the release of 2006's "Tenacious D in The Pick of Destiny" starts to form. Especially illuminating is the excitement surrounding the movie, with cameras at the premiere, catching New Line Cinema execs sharing their joy with the picture's earning potential, laying the groundwork for a potential sequel. And then "The Pick of Destiny" was unleashed on America…and nobody came. It's one of the great box office mysteries of the decade, with the cult popularity of the group unable to cross over to mainstream success, turning the feature into secret handshake cinema. The film itself didn't deserve such a cruel fate, with director Liam Lynch masterminding a wild ride of music and comedic mayhem for Tenacious D, finding the joyful silliness of the band while celebrating their exceptional musical power. It's such a fun endeavor, triumphantly selling Black and Gass's wonderful way with stupidity and rock authority. Read the rest at Blu-ray.com