The Avengers - Visiting the Set
Quint from Ain't it Cool News has spent two days on the set of The Avengers, and has an editorial about it.
The Avengers - VFX by ILM
We continue to keep a keen eye on the development of The Avengers film, and the good news is ILM has signed on to do the visual effects.
Avengers: Age of Ultron - Behind the Scenes Videos
Marvel go behind the scenes on Avengers: Age of Ultron with these three featurettes.