A couple of thoughts: it looks like, though this actor is a slighter physical presence compared to Christopher Eccleston, that David Tennant is going to be the more swashbuckling, intimidating Doctor Who. Good.
And secondly, loved the THE EMPIRE STRIKES BACK homage. Followed by the HITCHHIKER'S GUIDE TO THE GALAXY reference. Which'll probably piss off the old school Whovians. Also good. Oh, and the continuing great design work. Those Santa masks, like Victorian toys. The Alien ship and The Sycorax themselves who were very Bryan Hitch. All this, and the clips fom the upcoming second series, have me hankering for more, as soon as possible. Cool.