I suppose, when I first go into it, I'm more interested in the old Doctor's ending. But, on repeat viewings, once I've gotten to know the new Doctor a bit better, I'm more interested in seeing him show up. At least, that's definately how I've felt about "The End of Time." When I first watched it, I really wasn't sure about Matt Smith at all. I was more caught up in Tennant's departure (even as I was screaming for him to get on with it!). But now that Smith as firmly established himself as one of my favorite Doctors, I've found that the last 2 minutes of "The End of Time" is my favorite part of the episode. Now, when Matt Smith shows up, it's like my old friend has finally arrived.