As Gertrude Stein might have put it, a cento is a collage is a mix tape is a video montage. This hypothetical description is fitting in a number of ways. Although the cento form is ancient--in existence since at least the days of Virgil and Homer--it was also used to striking effect in the Modern era: consider, for example, T. S. Eliot s The Waste Land and Ezra Pound s Cantos. More recent centos include John Ashbery s \u201cThe...