TVGuide.com hit the set of the ABC medical drama ahead of Oh's exit to find out what the actress and her character, the stubborn and cocky Dr. Cristina Yang, has meant to the cast members over the years. What was Ellen Pompeo's favorite moment working alongside Oh? Who teared up just thinking about Oh leaving? Check out our gallery to find out how the cast feels about Oh exiting and share your thoughts in the comments below.
Grey's Anatomy airs Thursdays at 9/8c on ABC.