We've talked about the TARDIS before.  We've had discussions about the Chameleon Circuit and temporal physics.  This week, we're discovering a whole bunch (but by no means all) of the little used funtions of the TARDIS.  Little things that the Doctor may have mentioned or used only once, things that writers or showrunners came up with at the last moment when they realised they had painted our intrepid crew into the perverbial corner.

And stuff...

WARNING: Contains rabbit chasing