One other thing though

[beccaelizabeth]

That bit where the Doctor and Jack were talking, and the Doctor said Jack would still exist and Jack was all hey I could look him up and the Doctor was all yes the only guy you'll be happy with is yourself... okay, funny, and has been said before in the behind the scenes stuff so now it's said on screen, but... hint of Immortality Angst there? Just a bit? Because it's funny *but* it's true in that if the whole human race is going to spend a million years as gas and another million as downloads... what about Jack? He's just going to keep on being Jack. Forever.

Also... wouldn't that short out spacetime? You know, crossing timelines? So it's not really a funny. Because the only one he'd be happy with is himself BUT that's the only one he can't be with.

So it's like being cheeky yet angsty. In secret. Sort of thing.