Tonight's episode of American Idol (Season 12: The Top 7 rock -n- roll) focused on classic rock music and used Rush's Limelight during the opening theme. They even showed a brief picture of Rush along with a number of other classic rock artists. Unfortunately nobody actually sang a Rush song during the competition though. You can watch some video of the opening sequence below or on YouTube at this location (thanks RUSHnATL).
NOTE: Posts over 10 years old are partially archived. All comments, images and other embedded media have been removed.