September 22, 2010 6:30 pm Best Butt Exercises Celebrities like Kim Kardashian, Beyonce and Jennifer Lopez all have something that many women want. US & World Videos 3:12 Groundbreaking new device targets liver tumors 5:38 SoCal family wins $11M settlement against mental health facility 2:17 Kaiser Permanente reaches tentative agreement with union 1:21 Why some are getting Botox shots on arms 4:20 What Is Cardiac Arrest and How Common Is It Among Young People?