I got the DVD as an easter gift. After being a player since Doom 1, and having read mixed reviews, I was very nervous about watching what could have been an awful movie. I WAS WRONG!! This movie kicks a$$ in every way possible. It is essentialy an homage to 'Aliens', but done well, with Dwayne 'The Rock' Johnson once again lifting some fairly safe genre material to another level of enjoyment. The sets and atmosphere are really evocative of Doom 3 more than old school doom, and the monster designs reflect that, as does the 1st person perspective action sequence (very well done BTW).
To cap it all off, you get a nifty fistfight as the end finale.
I dare say that some hardcore doom geeks will find much to b1tch about, but for those who like kick a$$ action movies on a saturday night you could do far far worse