The one where Forrester's plan blows up in his face...
Planet of Giants is possibly Doctor Who's worst ever season opener. People may think Galaxy 4, The Dominators or Time and the Rani are poor debuts, but at least there's a bit of life in those stories, whether it's Chumblies, Quarks or Bonnie Langford. Here, it's all just so dull and pedestrian and feels like a backward step dramatically from Season 1.
The DVD extras for this story show how little Carole Ann Ford and William Russell remember being involved with it. Indeed, the best Russell can recall is messing about with the oversized matchsticks. The actors don't seem convinced or invested in the serial at all, except perhaps Hartnell with his customary vim. Right from the start we have this sterile exchange between Jacqueline Hill and William Russell, which they deliver as if they're robots devoid of expression or emotion:
Barbara: "Ian - the Doctor and Susan. They must have been drowned."
Ian: "We don't know. We must go and find out."