The drama might be non-stop at Grey Sloan Memorial, but the cast clearly knows how to have fun between takes, with stars such as Oh, Patrick Dempsey, Kevin McKidd and Jessica Capshaw showing a lighter side in the newly released bloopers.
While Oh's exit will undoubtedly affect the series, Season 10 will also feature some new faces. "Dexter" star James Remar will appear in multiple episodes, Bobby Campo and Heather Hemmens will play an engaged couple -- a firefighter and cop, respectively -- who are involved in a disaster in the Season 10 premiere, and Veronica Cartwright is also set to guest star.
"Grey's Anatomy" Season 10 premieres Thursday, Sept. 26 at 9 p.m. ET with a two-hour episode on ABC.