In a new video showcasing the voice actors of Broken Age, Double Fine revealed that Jack Black (among other notable voice actors), is joining the cast as Harm'ny Lightbeard, "The lifter of clouds." The announcement of Black's inclusion was made official during Double Fine's panel at PAX.
Jack Black has worked with Double Fine before, when he played Eddie Riggs in Brütal Legend. His role in Broken Age appears to be more of a cameo, as he punches Tim Schafer in the end of the video below as retaliation for giving him a small role.
The video also reveals that the talents of Jennifer Hale (Mass Effect, Bioshock Infinite, etc.), Richard Horvitz (Raz from Psychonauts), and many other new and returning Double Fine actors will be making an audible appearance in Broken Age.
Broken Age's firm release date is still ambiguous, but Double Fine is hoping to get at least some of the game in players' hands in early 2014.