It’s been 8 years since Seth Meyers took the Late Night baton from his friend Jimmy Fallon, carrying on a legendary legacy started by David Letterman in 1982. Before taking over behind that desk, Meyers spent over a decade at Saturday Night Live, first as a cast member, then as Head Writer and host of “Weekend Update.” In this week’s “Sunday Sitdown,” Willie Geist gets together with the television host and comedian to talk about applying those writing skills to a new children’s book inspired by his three kids.