First, directly via
azriona (and indirectly via half of DW fandom), a clip from David Tennant's failed American TV pilot. Yeah, his "American" accent is . . . not quite there, but boy is he pulling out the cuteness stops (lolling around on the couch, going over-rather-than-around the couch, licking his fingers, etc.). Clearly, whoever was directing had a very savvy idea of how to use him in a marketable way, so mucho points for that:
Click to view
And, for a change of pace, this from
countessaleska via Facebook:
Click to view
Be sure to keep an eye on the map labels and other stuff in the background -- some very cute, witty, geeky in-jokes.