Oh, for goodness sake - just call it 'Doctor Who Confidential' again and be done with it.
That's what this is. It's the same programme that used to run back in the old days and would then end up on the DVD to bump the price up.
I'm not sure what giving it a different title really does. If it's just the same thing it always was then why bother?
This is fine, it's mildly interesting to see how the episodes were made, but could it not just go on the DVD?
The only big negative about it is that it provides Russell T Davies the opportunity to spew his PC messaging to the world and make us all feel horrible for not spotting it in the episode we have just watched.
Overall, fine.