The preview includes an interview with Matt Smith, in which the actor talks about the interest generated by Neil Gaiman's episode The Doctor's Wife, football, and also his feelings on the series culture:
Doctor Who is brilliant. Science Fiction invites conspiratorial thinking, which I also think is brilliant. Why not sit at home on the computer and be conspiratorial? There are worse ways of spending an evening.
Steven Moffatt also provides an introduction and exclusive guide to the thrill-packed episodes coming up over the next several weeks.