doctor who season 4 finale

I can't believe its finally here! I'm taping it tonight and probably watch it later. I'm so sleepy right now.
I was surprised that scifi is actually showing the entire episode which is a hour and a half.  I' m going to miss this show. Hopefully scifi will show the 3 specials that they're planning on for next year. Can't believe season 5 won't be shown until 2010! *eek* I'll be going thru doctor who withdrawal. 

Update: So what did you guys think of the episode?