'Fifty Shades of Grey' stays on top of weekend box office

U.S. News & World Report'Fifty Shades of Grey' stays on top of weekend box officeU.S. News & World Report3 spots at the box office in their second weekend. Fox's "Kingsman" nabbed $17.5 million, while Paramount's "SpongeBob" soaked up another $15.5 million. A trio of newcomers failed to crack the top three. Disney's cross-country racing tale "McFarland ...