ARTIST IN ATTENDANCE. Selected by AGO film curator Jim Shedden as one of the “100 Best Canadian Films of All Time,” Keith Lock’s seminal underground film returns to The Cinematheque, in a brand-new restoration, nearly fifty years after first debuting here. “In the early 1970s, Toronto filmmaker Keith Lock moved to Buck Lake, near Orillia, Ontario, where members of the Toronto art scene were undertaking an experiment in communal living. Lock filmed the achievements and daily rituals of his fellow communards, his camera bearing witness as a community assembled and dispersed.