Jesse Williams is returning to 'Grey's Anatomy' in season 19 — here's everything you need to know about the new season

Patrick Dempsey was one of the main characters of Grey's Anatomy for ten years, but what has he done since he left the show? Created by Shonda Rhimes, Grey's Anatomy premiered on ABC in 2005 and even though it was initially a mid-season replacement, it quickly earned the attention and praise of critics and viewers, which has allowed it to continue for over 10 years. Even though most of its original cast is now gone, Grey's Anatomy continues to be quite popular and shows no signs of stopping soon.