NY Thousands of used MetroCards (transit fare cards) rained down from above, making a peaceful lapping sound as they hit the floor. This lovely noise accompanied Jonah Bokaer's solo, Octave, at Danspace Project's Food for Thought series last January. In a reference to Marcel Duchamp, he periodically spun a bicycle wheel (made of MetroCards), then performed a devilish combination dictated by the computer program DanceFocus 1.0. Full of purpose, he performed crisp, witty isolations and surprising folding in-on-oneself movements on the ground. Bokaer, a member of the Merce Cunningham Dance Company, wore belted overalls spattered with white footprints. A white handprint covered half his face, giving him the look of a very serious court jester.