January 28, 2011 4:34 pm Jennifer Morrison: Working with Katy Perry Was “Surreal” The “How I Met Your Mother” actress says she was surprised that pop star Katy Perry was a “sweetheart” during filming for her guest spot on the show. Local 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 2:30 ‘Baby Reindeer': Inside Richard Gadd's Netflix phenomenon 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