[Tillane]

Good episode - but, as others have mentioned, plenty of plot holes. Georgia Moffett seemed to fit in with The Doctor, Martha and Donna very quickly and easily, and I certainly wouldn't object to seeing Jenny turn up again (and I'm sure she will, though not in a spin-off. I suspect she'll re-appear before the end of this series.)

And we had terraforming tech appearing for the second time in as many episodes. I agree with Lenny; the theme looks to be planet birth, death and shaping. And if we're expecting old Davros back at the end of the series, what's the betting that he'll be trying to turn Earth into New Skaro?