Continuity Nod/Radio

Examples of s in include:


 * The Big Finish Doctor Who audio drama "The Kingmaker" features a scene in which a stranded Doctor leaves a note for his future self to find. It is "later" mentioned to have been delivered by "some bloke with big ears and a Northern accent", an apparent nod to Christopher Eccleston. In that same story, Tom Baker provides a cameo in the form of a clip from a history documentary, presented as the Doctor's taped notes (not actually Tom Baker, but a very convincing impression by Jon Culshaw).
 * Another character with an accent similar to Eccleston's also gets in a "Fantastic". Big Finish: tweaking the limits of BBC licensing restrictions for over 10 years.
 * And the fifth Doctor audio "The Whispering Forest" features the Green Crescent medical symbol from "New Earth". At the end,  sarcastically asks if the Doctor is leaving Purity because it's "too green for you", referencing the final line of "Kinda".