February 17, 2009 6:28 am Stars Visit Kids During NBA All-Star Weekend Jay-Z explains why music is important in school, and the kids perform to the delight of the rapper, his wife and LeBron James. US & World Videos 2:52 Severe weather kills at least 5 as tornadoes rip through Midwest and South 0:48 World Central Kitchen to resume operations in Gaza 8:39 Gina Rodriguez gushes 0ver motherhood with son Charlie 2:22 Scarlett Johansson and Colin Jost have date night at White House Correspondents' dinner 1:37 Pro-Palestinian protesters gather outside White House correspondents' dinner