The David Tennant Treat 4 Today is about the Doctor Who 50th Anniversary episode, The Day Of The Doctor.
Apologies that I do not remember where this came from but it is the second part of a great article explaining the relationship between that episode and Doctor Who both past and present.
'Kate Stewart declares, ‘I need you to send me one of my father’s incident files,’ adding it’s ‘Codename: Cromer…’ This is a reference to The Three Doctors. In that story, the Brigadier (Kate’s dad) is transported to an anti-matter world in a Black Hole but refuses to believe he’s left Earth. After peering out over the alien terrain, he gives one of his most memorable asides, murmuring, ‘I'm pretty sure that's Cromer…’
‘Reverse the polarity!’ This is a reference to the Third Doctor’s ‘catch-phrase’ – a variant of ‘Reverse the polarity of the neutron flow!’ There was a line about this in The Lazarus Experiment too.
The sonic screwdriver plays a significant role in The Day Of The Doctor, even serving as a metaphor for the Doctor’s changing appearance. (‘Same software… different case!’) The device was first seen in the Second Doctor adventure, The Fury from the Deep.
The Tenth Doctor’s distancing himself from the phrase ‘timey-wimey’ is a cheeky nod to the fact he himself coined the expression in Blink!
Elizabeth misquotes one of her most famous lines when she references killing the Zygon. Her ‘real life’ original words were, ‘I know I have the body of a weak, feeble woman; but I have the heart and stomach of a king, and of a king of England too…’ and comes from an address known as the ‘Speech to the Troops at Tilbury’ delivered by the Queen in August, 1588.
Whilst looking around the ‘new’ TARDIS interior, the Tenth Doctor comments, ‘Oh, you’ve redecorated! I don’t like it!’ The Second Doctor delivers a similar line in The Three Doctors and The Five Doctors.
The Moment cries out in delight, ‘Now you’re getting it!’ Rose Tyler delivers the same line with equal joy in The Girl In The Fireplace when Mickey Smith begins to understand how to enjoy adventures with The Doctor.
When the Doctor attempts to save Gallifrey we see 13 ‘versions’ of him, including a glimpse of one Doctor we haven’t yet met… There’s another familiar face at the National Gallery – the Curator. But what is the true identity of this enigmatic figure? As he himself said, ‘Who knows?’
The War Doctor’s observation, ‘Wearing a bit thin…’ brings to mind the words of the First Doctor. In The Tenth Planet he commented, ‘…this old body of mine is wearing a bit thin…’ moments before regenerating for the first time.
The Tenth Doctor’s final words in The Day Of The Doctor are, ‘I don’t want to go.’ These are his final words in The End Of Time, spoken just before he regenerates. In An Adventure in Space and Time, William Hartnell, as played by David Bradley, says exactly the same thing when it becomes apparent he must leave Doctor Who.'