1. Mass media forms such as music, television, and radio programmes, and above all films, that underperformed or were commercial failures at the time of their release but have subsequently developed a cult audience, a devoted following of fans who often define aspects of their personal identity in relation to this genre, and who are likened to religious devotees because of the strength of their enthusiasm.
2. Media forms targeted at niche audiences: the films of Tarantino, for example. See fandom.