March 25, 2009 9:28 pm “Dancing” Stars Rock Out In LA “Dancing With the Stars” pros Mark Ballas, Derek Hough and Julianne Hough perform as The Ballas Hough Band at the Grove in LA. Afterwards, Mark and Derek took pictures and signed CDs for fans at Barnes and Noble. US & World Videos 1:45 NYPD enters Columbia University in riot gear to clear protest 4:28 ‘Apples Never Fall' and ‘Jurassic Park' star Sam Neill reveals his real name 3:21 Katy Perry's surprising regret about cheeseburger Met Gala look 1:01 Biden administration plans to reclassify marijuana as a Schedule III drug 2:28 King Charles returns to public duties amid cancer diagnosis