Jack: (very intrigued/approving) Who are yoooou?
Doctor: Jack, it's me. It's the Doctor.
Jack: (whistles) You certainly had an upgrade... You almost start to wonder if you age backwards...

Or something. It's gonna be fun once the specials are done (although I'll miss David Tennant) and we can see the series :D I wonder how 11 is going to be dressed...