Find the best and most entertaining Grey's Anatomy quizzes to share with your friends. Take quizzes about Grey's Anatomy plot lines and your favorite Grey's Anatomy characters and actors including Dr. George O'Malley (T. R. Knight), Dr. Meredith Grey (Ellen Pompeo), Dr. Cristina Yang (Sandra Oh), Dr. Izzie Stevens (Katherine Heigl), and Dr. Alex Karev (Justin Chambers).