In "Love, Loss and Legacy," Mark questions an operation being performed by a relative of which member of the Seattle Grace Mercy West staff?
MerDer! See how much you remember about Dr. Shepherd and Dr. Grey!
Test your knowledge on one of Grey's most intriguing characters!
Play this quiz to prove how well you know Cristina
McDreamy! See how well you know Patrick Dempsey!
Teddy! The Merger! A gunman at SGH! How much do you remember?
Owen! The Wedding! The Post-It! How much do you remember?