On Saturday night before Halloween, hundreds of masked and costumed D.C.-area residents took to Georgetown's streets for bar-hopping, trick-or-treating and general mischief. Some went nearly naked in bras and panties, while others were completely covered up in elaborate masks, robes and dresses. In addition to vampires, midnight nurses and Harry Potters, presidential candidates George W. Bush and John Kerry showed their (masked) faces multiple times during the festivities.