actress September 21, 2019 4:31 am 'Tonight': Chrissy Metz and Jimmy Fallon Improvise a ‘This Is Us' Theme Song “This Is Us” Actress Chrissy Metz give hints about director M. Night Shyamalan’s cameo in season 4 and improvises a theme song for the show with host Jimmy Fallon. US & World Videos 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 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