A line used quite a few times in Doctor Who now down the years. Most notably Patrick Traughton I believe said it about Jon Pertwee's TARDIS interior.

I also think Sarah Jane said it about the 10th Doctor's.

Any more??

I spat my tea out at this line and it is my favourite one of the episode!

And in The Five Doctor's Troughton says it about The Brig's new office decor, as an homage to The Three Doctors.