On the spur of the moment we have decided to watch an episode from each Doctor's era until we decide it is bedtime. F has stipulated that it should be first episodes, apart from The Keys of Marinus #3 which is next in his personal sequence. I in turn will specify The Mind Robber #1 for Troughton. But I am agnostic about good first episodes for later Doctors to show an eleven-year-old who is a keen reader of Doctor Who Magazine but hasn't seen that much Old Who. So, what do you think?