September 7, 2011 5:04 pm Fall TV: “Up All Night” Parents Try to Grow Up Will Arnett and Christina Applegate say the bewildered parents they portray in their new family comedy, “Up All Night,” premiering Sept. 14th on NBC, are just kids at heart. 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