New theatrical trailer released..
http://movies.yahoo.com/feature/doom.html
And now I'm definitely sure that I'm going to see the movie
(even if it looks like a real turkey):
They have included my (and most others) favorite weapon from the Doom games:
the Chainsaw... 
It's also interesting to see the FPS (First person shooter) perspective in some of the scenes, and a couple of creatures from Doom 3 can be found in that trailer as well..