It’s time once again to do the traditional round of “Before They Were Stars” clips for this year’s Academy Award nominees. Rooney Mara has garnered her second Oscar nomination this year for her performance in Carol. Mara started out her career by guest-starring on several TV shows, including an episode of The Cleaner, which aired for two seasons on A&E in 2008-09. The premise of the show involved a recovering drug addict attempting to help other drug addicts beat their habit, and Mara made a guest appearance as a piano prodigy who becomes addicted to meth.