Okay, that is weird! Mind you, having someone in the Tardis that isn't hot for the Doctor might make for an interesting change. Still, a bit of friction goes a long way. Guess we'll have to see how it works out.

Incidentally, I found the series 3 season ender somewhat lacking compared to season's 1 & 2. Certainly epic in scope and all, but somehow underwhelming after the previous two episode build up. Hmm, will need to watch it again before getting my head around it I expect