Doctor Who is well-known for its celebratory multi-Doctor stories, but 1985’s “The Two Doctors” shows just how not to do this kind of adventure. Most Doctor Who multi-Doctor stories come in anniversary years, a pattern set by 1973’s “The Three Doctors” and still followed by the 2005 relaunch. Russell T. Davies went even further with Doctor Who‘s 60th anniversary, literally bringing back David Tennant as the main Doctor.