Alright, so that is just a teaser for the longer teaser for The Avengers that'll be shown during the Super Bowl this Sunday. As it's just a few seconds long, there isn't much to it, although you do get a split-second, blurry glimpse of what they might as well go ahead and admit are Skrulls:
In slightly less-anticipated news, here's a Super Bowl teaser teaser for Disney's John Carter:
In addition to the films above, there are also reportedly going to be something like four different spots for Act Of Valor, and I'd be surprised if The Amazing Spider-Man and other summer tentpoles don't get in on the action. It's an expensive proposition, advertising in the Super Bowl, but a $2 or $4 million advertisement is still just a drop in the bucket compared to the overall advertising budgets for most of these films.