Last week, Documentary Now! Presented what may be my absolute favorite of its documentary intricate spoof: Co-Op, a letter-perfect, and note-perfect, lampoon of the documentary about the recording of the original Broadway cast soundtrack of Stephen Sondheim’s Company. Tonight, the documentary being satirized is Marina Abramovic: The Artist Is Present, about the life and art of a particularly and peculiarly devoted performance artist. In Waiting for the Artist, Cate Blanchett portrays performance artist Izabella Barta, some of whose artistic installations can best be described as… commodious.