This new full-length trailer for James Gunn’s Guardians of the Galaxy provides more background on Star-Lord’s origins, plus a better understanding of Nova Corps role in the proceedings, and, best of all, more Rocket Raccoon.
There will be a lot riding on this major expansion of the Marvel cinematic universe when it debuts on August 1st.  Disney has made a major licensing push for the property, which will have a large merchandising presence at major retailers (see "Heavy Presence at Mass").  With the film’s debut just six weeks away, the publicity barrage is just beginning (see "'Guardians' Character Posters").