I have to admit, this one got to me. Its beautifully done. Regardless of how the game turns out, I think this trailer is a work of art. The music, shots, and way it was edited is just really well done.
Its gory at parts, I won't lie, but its worth watching through to the end.
http://www.g4tv.com/videos/51316/Dead-Island-Cinematic-Trailer/?quality=hd#video-51320