2008_10_amywill.jpgWeekend Update, the longtime staple of Saturday Night Live that sends up the news stories of the week, began last night with a breaking exclusive of its own: co-anchor Amy Poehler had just given birth to a baby boy. Alongside husband Will Arnett, Poehler delivered her first child "Archie" early Saturday evening. Archie Arnett came in at 8 pounds, 1 ounce and both mother and child are reported to be in good health. Poehler was not expecting to miss last night's show and had been rehearsing up until Friday. Her delivery means in all likelihood that her final episode of SNL was last week, where Poehler got the opportunity to shine with a rap number alongside a dancing Sarah Palin on a night that scored the highest ratings for the show in fourteen years.