 Times Online | A Wizard Is a Whiz at the Box Office New York Times Daniel Radcliffe, right, and Michael Gambon in "Harry Potter and the Half-Blood Prince," the sixth movie in the franchise. By BROOKS BARNES LOS ANGELES -- The boy wizard's box office powers are stronger than ever. "Harry Potter and the Half-Blood Prince ... Box Office Wizardry: Harry Potter's Wand-erful Week But Pottermania fails to grip the city 'Potter' conjures up $159.7 million in 5 days |