The 14 Strangest Moments in Doctor Who Alt-History

This article is a pretty detailed look at some of the things in the making of Doctor Who that almost happened.  Beyond things like the abandoned scripts for "The Masters of Luxor" and "Doctor Who Meets Scratchman" this list includes some casting and production near misses.  It is very interesting to see how some of these things would have panned out.  Here is the link to the article -

http://observationdeck.io9.com/the-14-strangest-moments-in-doctor-who-alt-history-1466395880