As we saw in the first trailer for Guardians of the Galaxy, the film looks like a really fun little space adventure. But despite Marvel's backing, that might not be enough for a public that largely ignores space adventures unless they're branded with a notable "Star" prefix. Also, there's the issue that no one knows who the Guardians of the Galaxy are, nor why two of the main stars are a CGI tree and an anthropomorphic raccoon.
No doubt aware of that, the studio has just released a set of videos introducing the cast and, perhaps most crucially, reminding everyone that it's not just a sentient tree and talking raccoon out there. These are galactic flora and fauna with the voices of celebrities Vin Diesel and Bradley Cooper! Also, there is a professional wrestler. Come on, what else do you want, America?