Avengers: Age of Ultron - Previs
Chris Olsen has posted a reel of his previs work for Avengers: Age of Ultron.
The Amazing Spider-Man 2 - Clip + Scoring Featurette
Here's a clip from The Amazing Spider-Man 2, and a featurette about scoring the film.
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.