On dancers, on prancers, on holiday shooter!

Jordan Matter is a one-man flash mob - with a camera. On a frosty Monday in early December, Matter and two dancers from the Pennsylvania Ballet and one from BalletX are pinballing around downtown, politely commandeering Santa's seat in City Hall's courtyard, an entire block of Addison Street, and a divider in the middle of South Broad Street - during rush hour.