Doctor Who: The Waters Of Mars

The best part of The Waters Of Mars wasn't the story, which was rather average Doctor Who fare, but watching the Doctor start down the slippery slope of megalomania. He has always been arrogant and self-righteous, but at the end you always knew that he had done the right thing. That was definitely not the case in The Waters Of Mars. The story ends with the ominous sound of the cloister bell, but this time the danger may be The Doctor himself.