Someone at the MedMutual building in downtown Cleveland (I used to live there until 2000) has a great top-down view of the set where Joss Whedon's The Avengers movie is being filmed. They're posting videos of the action they can see from their windows. It's almost like watching an overhead-view video game like Gauntlet, except with superheroes and real actors.

Here's Thor smashing a car with his hammer:

Thor and Captain America fight some bad guys in the street:

Captain America get launched out a window:

There are a few more at YouTube.