The wife's started going on about getting netflix again.. any free deals at the moment...???

This time last year Radio Times was giving away free vouchers.. we got about 3 or 4 months worth..

The problem with all these eternally running series of sequels and prequels,
is writers have to contend with and conform to decades of accumulated story & character 'canon'...

..or face the withering wrath and online threats of fanatical OCD fan boys & girls...

eg.. http://www.denofgeek.com/tv/doctor-who/21143/doctor-who-a-celebration-of-continuity-errors