Avengers: Age of Ultron - Opening Battle Featurette
The opening battle of Avengers: Age of Ultron is discussed in this featurette for the film.
Captain America: The Winter Soldiers - Making of VFX
fxguide go behind the scenes on the major VFX sequences of Captain America: The Winter Soldiers.
The Avengers - A New Threat - End Credit Clip
In case you've missed it, check out the post-credits scene from The Avengers, starring a new threat for the Marvel universe.