(S04E06) "Are you two... a couple?" - Hahn

I think we might have finally reached a turning point for Grey's Anatomy. This wasn't the best episode, but it set up a lot of things that I think the show desperately needed. The most noticeable difference? The addition of Dr. Hahn. She's added a fresh voice to the Seattle Grace staff and her presence has given life to a simmering feud between Cristina and Izzie which I can't wait to see unfold. We saw some great development from the ongoing saga that is Derek and Meredith, Lexie became more than just "the other Grey," and George and Izzie finally hit a roadblock.