Grey's Anatomy why some of the show's biggest stars left
Since its inception in 2005, Grey's Anatomy has gifted the world with unforgettable characters and thought-provoking storylines. Boasting a 19-year tenure, viewers have come to know and love the endless interns, residents and surgeons introduced at Seattle Grace Hospital (now Grey Sloan Memorial), but we've also waved goodbye to most of the original cast, including