Marvel have released four clips and a viral video for Guardians of the Galaxy.
Marvel's Agents of S.H.I.E.L.D. - Trailer
The first trailer is out for Agents of S.H.I.E.L.D., a new tv series from Marvel.
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.
VFX Roll Call for The Avengers
This immense article about the VFX of The Avengers makes for a great read and gives great insight into the making of the film.