Mer, Cristina and Zola in "Free Fallin'". The eighth season of Grey's Anatomy premieres September 22.

Cristina eyes Meredith in this scene from "You've Got To Hide Your Love Away." After all these years, we still adore these two.

It's tomorrow... or today?

Owen helps Cristina purge her system after drinking too much. At least we assume so. If anyone has another theory, do share!

Not in that kind of way. The residents are likely volunteering answers (or their services) in this shot from "Life During Wartime," from Season 5 of Grey's Anatomy

Meredith and Cristina talk at the bar in "There's No 'I' in Team," from the fifth season of Grey's Anatomy. Wonder what about ...

In "There's No 'I' in Team," from the fifth season of Grey's Anatomy, the surgeons attempt a series of operations in which each must be successful, in a certain order, in order to save a patient. Sweet!

In "In the Midnight Hour," from Season Five of Grey's Anatomy, Meredith and Cristina must respond to a surgical crisis. Then again, that happens most weeks.

Following a place crash and a shoot out, Heroes unite. Will Peter, Ando, Hiro, Mohinder and Parkman get their revenge?

Cristina and Meredith continue their discussion at Joe's in "There's No 'I' in Team," from the fifth season of Grey's Anatomy. Wonder what it is they're discussing?

Cristina and Mer on the eighth season premiere of Grey's Anatomy.

Cristina and Meredith in a moment from "New History." We're glad they are interacting again for us to enjoy!