March 1, 2013 5:40 am Weekend Box Office Preview “Jack the Giant Slayer” leads this week’s new movie releases. NBC’s Raphael Seth has more. US & World Videos 0:59 Runaway zebras corralled in Washington state; one still missing 1:40 Charlie Puth reacts to Taylor Swift's ‘The Tortured Poets Department' name-drop 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 0:23 Names of two pandas coming to San Diego revealed