Ant-Man - Extended Clip
Marvel have released this three and a half minute clip to celebrate Ant-Man's upcoming release on Blu-ray.
Avengers: Age of Ultron - Behind the Scenes Videos
Marvel go behind the scenes on Avengers: Age of Ultron with these three featurettes.
Avengers: Age of Ultron - Casting the VFX Vendors
fxguide have created a very thorough article about the VFX vendors contributing to the massive Avengers: Age of Ultron.