Exhibition closings come in waves; the next set is due to break on February 10th. Don’t miss Stan Douglas’s video ‘Klatsassin,’ a murder and revenge story set during a gold rush in 19th century British Columbia, at David Zwirner Gallery. Presented in Douglas’ characteristic looping format, with 850 possible permutations, the entire effort runs over 70 hours, both teasing and enticing viewers with an elusively juicy plot. Though their subject matter is decidedly less dramatic, at least two other shows merit a last minute trip to Chelsea. Dike Blair’s tiny, mundane, but mysterious still life paintings at D’Amelio Terras Gallery muster a murky noir feeling, while Charles Long’s elegant, white sculptures at Tanya Bonakdar Gallery recall Giacometti but were actually modeled on bird droppings, giving them pedigree in an art world long obsessed with bodily function.