By Mike Cervantes, Hollywood Staff
The best friends on Grey's Anatomy have become fierce enemies. Dr. Meredith Grey (Ellen Pompeo) and Dr. Cristina Yang (Sandra Oh) used to be the type of buddies who laughed often, confessed secrets, and hugged when the rigors of life and practicing medicine got difficult. Now, their friendship is strained, they have philosophical differences, and they have trouble being in the same room together. Luckily, we have the luxury of maintaining alliances with both parties in this battle. But if you had to pick a side...