Mostly as a note to myself, Christopher Eccleston and Russell T. Davies (main actor and writer for the new Dr. Who) also worked together on Second Coming. Russell T. Davies also wrote a Dr. Who book, but copies of that are a little expensive right now.
And as long as I’m noting things, Douglas Adams did 3 Dr. Who scripts, Pirate Planet (which I have), City of Death (which I need), and Shada (only done as a webcast with the 8th Doctor).