Seeing the twin towers burning from the office of his video company, Steven Mudrick set up a camera and kept it running until after the buildings collapsed, and in the days that followed he and Bryan Kortis roamed New York, taping interviews with survivors and sounds of the city. The sound track of this 76-minute video is a collage from those sessions heard over a nearly continuous view of the disaster, resulting in an intelligent and expansive treatment of that now-iconic imagery. The reactions range from jingoism (our flag is the "most beautiful in the world") to an accusation that the U.S. is responsible for mass killings in the Middle East. But the billowing smoke--hypnotic, terrifying, yet beautiful--dominates the voices, defeating attempts to think about the disaster, and though Mudrick breaks its spell with jerky zooms and camera movements, the event seems to remain beyond comprehension. Mudrick will attend the screening, introduced by writer, filmmaker, and Reader contributor Bill Stamets. Admission is free. Gene Siskel Film Center, 164 N. State, Wednesday, September 11, 8:15, 312-846-2800.