Obviously, this is the 14th Street/Union Square subway station in NYC.  As I was taking this shot the guy in the center happened to turn around and catch me.  Immediately after I snapped the shutter, he took a single step backwards and disappeared behind the support column.

• Aperture: ƒ/8
• Camera: Canon EOS 20D
• Focal length: 200mm
• ISO: 1600
• Shutter speed: 1/20s