Here's a clip from The Amazing Spider-Man 2, and a featurette about scoring the film.
The Amazing Spider-Man 2 - Clips, Spot and Featurette
Sony have released four clips, another spot and a new feauturette for The Amazing Spider-Man 2.
Guardians of the Galaxy - Four Clips + Viral Video
Marvel have released four clips and a viral video for Guardians of the Galaxy.
Iron Man 3 - Malibu Attack Clip
Tony Stark uses a piano in a unique way in this action packed clip from Iron Man 3.