'Grey's Anatomy': The Most Dramatic Behind-The-Scenes Moments

"Grey's Anatomy" is back for Season 17 after more than 15 years on air. During that decade and a half, the series has weathered all kinds of challenges, including real-life drama that resulted in some of its cast members leaving the show. Access Hollywood looks back on some of the most dramatic behind-the-scenes moments in "Grey's" history.