You'll learn two facts about Batman in the brief Arkham City teaser video offered exclusively by MSN Games UK:

Batman is sneaky Batman is good at fighting These are important character traits to reveal to people who have never heard of Batman before, which is apparently the target audience for this video. Otherwise -- if you know anything about Batman at all, or if you were looking for, say, gameplay footage from Arkham City -- the clip is less thrilling and more workaday.