I recently watched the most recent Doctor Who episode wherein he regenerates from the 11th Doctor (Matt Smith) into the 12th Doctor (Peter Capaldi).  The final change was much more abrupt than other regenerations that I’ve seen in the newer series.  Capaldi’s expression is wonderful….he looks stupefied.  He says several things in rapid succession (my favorite is “Kidneys!  I’ve got new kidneys! I don’t like the color.”) but the one that really grabbed my attention was when he asks Clara, “Do you happen to know how to fly this thing?”  You can watch the change here: http://www.bbc.co.uk/programmes/p01nzqm6