Oh God, this was brilliant! All those questions answered at last! I can't believe they actually did it - answered them, made it believable, didn't have the Doctor and Jack leaping straight into each other's arms - well, OK, Jack did but the Doctor didn't - loved the way he kept his distance, and explained why...
And Jack and Martha. (And Jack and everybody!) And Martha and the Hand.
And the Master! Though I think I preferred Jacobi to this Simms guy - he's too similar to David Tennant - which is probably deliberate, but - and he's taken the TARDIS, and -
How am I supposed to wait till next week?
And while I'm here, because I wasn't last week, I loved Blink too. It was a lovely story with wonderful original characters and it would have worked just well without the Doctor so I didn't miss his presence. And it was very interesting to have a Doctor Who episode which actually incorporated the more common aspects of a story about time-travel - because for a series about a time-traveller, we really don't get those very often!