An army of 8-year-old girls — Canadian pop idol Justin Bieber's target audience — woke up as groggy and red-eyed today as Lindsay Lohan does on every Sunday evening. Bieber made a musical appearance (if you want to call it that) on Saturday Night Live, which instantly lowered the average age of a viewer of Lorne Michaels' gasping franchise by 30 years. In the wake of Bieber's showing — which include the traditional two songs from the musical guest and a few skits — many are wondering when the 16-year-old money making machine will take on full SNL hosting duties...