'Grey's Anatomy' Becomes Longest-Running Medical Drama - the Cast Shares Their Best Show Moments

'Grey's Anatomy' Becomes Longest-Running Medical Drama - the Cast Shares Their Best Show Moments Cast: Justin Chambers, Ellen Pompeo, Chandra Wilson, James Pickens Jr., Kevin McKidd, Jesse Williams, Camilla Luddington, Caterina Scorsone, Kim Raver, Giacomo Gianniotti