DuringDoctor Whos 50thanniversary celebrations, everybody had their own favourite moments.

Maybe yours was seeing Matt Smith and David Tennant sparring with each other.

Maybe it was the all thirteen!

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moment on Gallifrey, seeing Tom Baker turn up at the end to say Hi!

How cool is that?, or watchingPeter Davison and Colin Bakertry and break into the BBC.

There was no shortage of punch-the-air moments for fans.

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Or, in the eyes of some fans, the TV series became canon.

It makes the Marvel Cinematic Universe look small by comparison.

Last week Big Finish announced a new series of audios based around UNIT: UNIT Extinction.

With this, Big Finish is finally entering currentDoctor Whocontinuity.

But what does that mean?

Of course, when we say it was a cast iron rule, its a bit of an exaggeration.

Maybe some sort of time war.

Oh, and David Tennants first role inDoctor Who?

It was a Big Finish audio.

but How much of the new series continuity can fit into Big Finish?

mingling with characters who think the Doctor looks like Matt Smith or Peter Capaldi?

Which is definitely not a no.