I have to rank this episode right up there with the Superbowl episode. Just those last 7 minutes alone....I had to rewind it just to see the scene with George and Merideth. Kudos to T.R. Knight (George) for putting emotion into a scene in which he got to look at his friend, write on her hand 0..0..7, 0..0..7, and as he saw that she realized what he was telling her and just as the comprehension set in, he grasped her hand as if to comfort her! That is so George! And I also loved the elevator scene -classic Grey's. You can't be sure if one, both or neither of them is gone. Did anyone else expect Denny to be the one on the other side of that door??!!!! I have to say that I started to figure it out when Bailey told the Chief about the intervention and he said "He never scrubbed in, I sent him home earlier today to be with his Mother." At that point I had a sick feeling in my stomach, and for them to then cut to the room where they were, and Meredith said "I guess you get that alot when you take a bus for somebody", which was such a thing he would do.
As you can tell, I was blown away by this episode. As others have said, it left me breathless....I still haven't really caught my breath!