EPs Shonda Rhimes and Betsy Beers, alums Isaiah Washington, Katherine Heigl, Eric Dane and Chyler Leigh and current stars Ellen Pompeo, Patrick Dempsey and more reflect on fun stories, sweet moments and life lessons they've learned from their 10-season journey with the departing actress.

Grey's Anatomy star Sandra Oh has packed up her trailer and filmed her final moment, scene and episode on the long-running medical drama.

PHOTOS: 'Grey's Anatomy' Cast, Creators Say Farewell to Sandra Oh

Now that the actress has wrapped her 10-season journey, viewers will buckle up for what promises to be an emotional farewell to Oh's Dr. Cristina Yang that will play out over the next three episodes of the ABC medical drama.

To mark Oh's farewell, The Hollywood Reporter spoke with creators Shonda Rhimes and Betsy Beers as well as the cast -- past and present -- over the course of season 10 to get their thoughts on working with Oh, how her storyline should end and their heartfelt memories and lessons, many of which have not been shared before.

As for Oh, the actress tells THR that she wants Cristina's story to end in a "celebratory" fashion. "I want it to be celebratory and that we all get to a place where we're happy to see her go," she told THR during a set visit for the 200th episode. Every so often a crewmember will look at me in a certain way or hug me in a certain way and I know what it's about. We don't say anything but I know what it is. It will be hard to say goodbye."

PHOTOS: 'Grey's Anatomy's' Famous Departures

Also offering their thoughts are alums including Katherine Heigl, Eric Dane, Kim Raver, Chyler Leigh, Scott Foley and Isaiah Washington, the latter of whom returns this week to set up Cristina's exit.

Check out THR's Farewell to Sandra Oh gallery here to see what co-stars Ellen Pompeo, Patrick Dempsey, Kevin McKidd and many, many more have to say about their time working alongside the Emmy-nominated and Golden Globe-winning actress, their thoughts on how Cristina should exit and other heartfelt messages to the actress.

Grey's Anatomy airs Thursdays at 9 p.m. on ABC. Oh's final episode, the season 10 finale, airs May 15.

Email: Lesley.Goldberg@THR.com

Twitter: @Snoodit