Tina Fey / Justin Bieber

Comedian and actress Tina Fey hosts; Justin Bieber performs "Baby" and "U Smile." <br> <br> "Filling Out the 2010 Census," "Duncan Hines Brownie Husband," "CBS Sports: The Masters," "Sarah Palin Network," "Favorite Student," "Weekend Update" with guests the Devil, Aunt Linda, and Tina Fey, "Al Roker's Ruff, Rugged and Roker," "School Dance," and "Lolene."