Characters behaving out of the norm, poems about poets, films about film-making or the cinema-- metaizing methods of expression, that is, reflections on an art in that art, are diverse and can be found in all genres, media and epochs. This compendium is the first to provide a systematic overview of the theories, forms and functions of metaization. Numerous sample analyses introduce the historical perspectives and media-specific approaches-- from Homer's metanarrative The Odyssey to The Simpsons as a metacartoon.