An eighty-hour film? It may sound utterly mad, and yet such is in the words of P. Adams Sitney “the most uncompromising and perhaps most demanding film ever made,” Gregory J. Markopoulos’s Eniaios, 1947–91. “Idyll Worship,” Sitney’s essay on this masterwork of avant-garde cinema, was published in Artforum in November 2004. In the summer of that year, the film scholar had attended a screening of Eniaios’s first installments that was held outdoors over three evenings in the hills outside Lyssaraia, a small village in Greece. Markopoulos died in 1992, leaving the film cut but unprinted. His partner,