The following is a list of appearances Tenacious D have made in films, whether fictional or non-fiction, this list includes the likes of documentaries and so forth.
Bio-Dome (1996) Edit
The film revolves around Bud and Doyle (Pauly Shore and Stephen Baldwin) - two clumsy, dim-witted slackers who, while on a road trip, look for a toilet stop in what they believe is a shopping mall, which in fact turns out to be a "bio-dome", a form of a closed ecological system in which five scientists are to be hermetically sealed for a year. Tenacious D make a cameo appearance as they play at an 'Earth Day' party just outside of the dome. Neither Black or Gass speak any dialogue in the film, however, they perform "5 Needs" - a song which would be later released in 2012 on the Rize of the Fenix album, as an iTunes exclusive pre-order track.