Comprised of Jack Black and Kyle Gass, the Comedy/Metal duo of Tenacious D may have been considered a joke in some circles, but to others they were not just funny, but they were damned good. Unlike other comedian/musicians, Tenacious D had musical chops, and could their own in the musical spectrum with their operatic style approach to Metal.
Should they be in the Hall of Fame?
Definitely put them in! - 100%
Maybe, but others deserve it first. - 0%
Probably not, but it wouldn't be the end of the world. - 0%