Doctor Who, "The Waters of Mars": Wet wet wet

As I mentioned in the "Dollhouse" post directly below this one, we're at the end of a long week for me and I'm not physically or mentally up to doing a write-up of the penultimate "Doctor Who" movie with David Tennant, which started out as another story of The Doctor trapped on a space station whose crew get picked off one by one, and then became something very different in the final act.

So tell me what you thought, and in a week's time we can discuss (hopefully at more length) the first part of the final Tenth Doctor story, "The End of Time."