We got to see a little of Rocket Raccoon in action in the first Guardians of the Galaxy trailer, and in this Rocket-centered promo, we get to hear Bradley Cooper give him voice. Update: Now with the rest of the Guardians!
Judging from the style of the promo, it looks like we'll gradually be introduced to the onscreen versions of the rest of the Guardians in similar fashion. But this one also gives us a closer look at the fantastic visual effect that is the talking, anthropomorphic raccoon.
Update: Thanks to the commenters who pointed out that we now have promos for Groot:
And Peter Quill:
[via Bleeding Cool]