Bernard Cribbins, everybody's favorite old man, reenacting that scene from Star Wars in a laser-turret? The Doctor dodging nuclear missiles in a twirling, whirling space ship? The gratuitous, but lovely cameos by all the old stars of 'Who? And that teary farewell - with David Tennant's lip quivering as he admitted 'I don't want to go!'
Marvellous. Brilliant. A tour de force that wrapped up Tennant's reign as The Doctor with satisfying aplomb.
The only problem now? What comes next...
David Tennant - easily the best Doctor since Tom Baker - will not be easy to replace. Not only that, but the beautiful Tardis design (that's become as much a fixture of the series as he was) crumbled and burnt during Tennant's regeneration. Truly, the next series will be a new 'era' for Who - and producer Stephen Moffat has some seriously big shoes to fill.
I'll tell you this, though - the preview of 'Series 5' does look promising. Not only that, but the newest 'Who girl' - Scottish actress Karen Gillan - is utterly delicious. Not only that, but she's a bona-fide ginger, too! (Even if the Doctor isn't, as Gooseman pointed out.)
Given my love/hate relationship with Russell T. Davies, I'm going to be interested to see where Moffat takes the series. Will the Doctor be popping back, encountering old friends like Captain Jack and Sarah Jane Smith? Or will it be a clean break? Only time will tell (and fortunately, Doctor Who is a Time Lord.)
Anyway. Here's the preview to Series 5. I can't wait!