Thanks to my beloved huntingospray, I shall be going to The Doctor Who Experience next month, and shall specifically be taking in the TARDIS set tour, a fact which has me...well, actually, right now I'm curiously casual and relaxed about it, but give me time and no doubt I'll be gibbering like a loon and squeeing like the fangirl I am, because quite frankly, going onto the real, live, actual TARDIS set? W00t!!! Also, the Experience itself is marvellous - at least it was marvellous in its London-based incarnation. I know there've been additions since it moved to Cardiff, so it's almost certainly even better.
There is also a tour of Cardiff Doctor Who locations. Which sounds fun. :-)