Sarah's recently been watching a fascinating series called Life After People, about what might happen to the planet were the human race to suddenly cease to exist (it's just finished airing on the History Channel over here, but worth checking out if it's repeated or comes out on DVD, IMO).
Its final episode is called Waters of Death.
To the best of my knowledge, it doesn't discuss the fate of a base on Mars getting invaded by a mysterious water-based parasitic organism (although y'never know, I might have blinked and missed that bit). But coming only a week after Waters of Mars*, the Doctor Who fangeek in me couldn't help but be rather amused by the juxtaposition.
David.
*OK, it was originally shown in the US back in June. But who's counting?