I honestly think part of the hand storyline is that the TARDIS has tricked herself into sensing that Ten is onboard with the Master, or that somehow she's reading the Master as Ten, so maybe that's what's going on. I absolutely loved this episode, though the explanations about Rose made me cry like a baby, especially Jack saying he went back to the 90's to watch her grow up, very very sad stuff. I really hope she comes back someday, because this is just frakking killing me. Also, Martha's line "I know that voice" referring to Saxon suggests that he either goes back in time before Martha meets Ten, or something else happened, but I think that's where she recognizes his voice from. Interesting stuff about the heart of the TARDIS suddenly coming back to haunt us, again, it would be nice if Rose were back, especially since I truly wonder if she's sharing Jack's fate, and what that means for her... still trying to figure out how the Doctor didn;t sense Saxon and how Saxon has been able to regenerate at all, according to canon (including the movie) as the Master, he wouldn;t be able to regenerate, so I'm not sure what's going on with that. Wow, I've just rambled on and on, sorry 'bout that. This episode kicked some serious arse. Oh, I'm American too, though I would love to live in Europe someday.. right, goig now hehehe