'SNL' mines for laughs social media, stock market, vaccine rollout John Krasinski guest hosted the episode. By (0) Kate McKinnon opened the first 2021 episode of "SNL" this weekend. File Photo by Jim Ruymen/UPI | License Photo John Krasinski arrives at the "A Quiet Place Part II" world premiere in 2020 in New York City. File Photo by John Angelillo/UPI | License Photo Rapper Machine Gun Kelly (L) and Pete Davidson attend the 20th annual InStyle and Warner Brothers Golden Globes After-Party in Beverly Hills in 2019. File Photo by Christine Chew/UPI | License Photo Jan. 31 (UPI) -- Saturday Night Live returned with its first new show of 2021 -- and the Joe Biden presidency -- this weekend.