A recent article popped up on yahoo,talking about the forthcoming "Watchmen" film.It is a pretty neat article,and contains a 2 minute,20 second teaser trailer at the bottom of the page.
Here is the link to that page.
Here is a link to the film's official site.
If you go to the official site,it may take a little time for the page to load.
It is currently slated to hit theaters on 3/6/09.