Over the course of Grey's Anatomy's 21 seasons, many characters have come and gone, including Sandra Oh's Cristina Yang, but the possibility of her return is now higher than ever. Given the nature of ...

People come and go on "Grey's Anatomy" all the time. The long-running medical drama created by Shonda Rhimes was introduced as a mid-season replacement back in 2005 and has seen a lot of main cast ...