I'm with Midos on this. The visuals are nice but there's no attempt to even suggest a story to people who haven't read the comic. Still, I hope it's just a teaser and that the film follows the plot more assiduously. It bothers me that they made Nightowl look more like Batman (tough and perfectly muscled) and less like the sad middle-aged man he is.

Watchmen
Trailer
(2:20)