Grey's Anatomy

Grey’s Anatomy’s 200th Episode: Patrick Dempsey and Ellen Pompeo Celebrate! (PHOTOS)

Patrick Dempsey ;(Derek Shepherd) and Ellen Pompeo ;(Meredith Grey) were in a festive mood today, August 19, on the set of Grey's Anatomy Season 10 — as this photo proves — since the cast and crew were celebrating 200 episodes! Filming began on that landmark installment this morning, and it looks like the talent behind our fave medical soap were nothing but smiles. Click through to see more of Patrick's and Ellen's social-media shares!