Trailer:
http://movies.yahoo.com/feature/doom.html
Ahahaha this thing looks ridiculous. The entire preview shows like, 30 seconds of introducing the assorted characters, and then it's just shot after shot of what looks, for the most part, like someone playing the game. First-person perspective with the gun bobbing up and down. Sweet, just what I always wanted, to watch someone else play Doom for an hour and a half!