The Doctor of the Day
the story wasn't anything amazing and I thought the ending was dumb
buuut it was enjoyable and certainly not the worst thing Moffat has ever done.
(also for god's sake, can everyone please stop assuming that everyone else has seen it and thus it's okay to thoughtlessly post untagged, warning-free spoilers everywhere? like, I knew several major plot points and most of the jokes because of gifs/quotes/whatever all over Tumblr, Twitter, Facebook, and here. I've only seen one person, out of all the people I know who have been ranting and raving over this, actually bother to give a warning before posting spoilers. one person.)