When Grey’s Anatomy first premiered back in March 2005, no one — not Shonda Rhimes, not the ABC production team, not even the main cast — knew how big the medical drama would become. The very first episode introduced a rag-tag group of interns who were all understandably fearful of their assigned resident, Dr. Miranda Bailey (also known as “The Nazi” at that time). They sized each other up much like how the viewers looked at the characters and wondered what would become of them during the most stressful time of their lives.