I wasn't supposed to die...
Doom III is old-school, same **** as before but looking much and much better, actually it does look awesome. Moving around slowly through hallways and getting almost scared to death when something drops or jumps and attacks you from out the dark. Really an unhealthy game!
Story? Mars, blah blah, strange things happening, blah blah, special team, blah blah, sudden event, blah blah, everyone dead or transformed, blah blah, you're the only survivor, be the hero. Standard linear story, just lock 'n load!
I've found it great to see how Doom has evolved, although it's still a pretty mindless game: If it moves kill it! It most certainly is not the best game ever, but you should try and see the beauty of it, more monsters, more killing, graphics splashing off the screen and creepy sounds filling up the room, making people passing your house think people getting killed inside!!
I also saw the movie and I must say I did like it a lot. Okay, they're mutants and there's no gateway to Hell, but the word 'Hell' was used many times though and my eyes got blurry the moment Sarge died... whoops, spoiler!
The last 10 minutes of the movie were shot from first person view and very well done, you should check out the making of to see how it was done, maybe it changes your opinion a bit if you didn't think much of it in the first place.
Well back to the game, if you played the original Doom-games then make sure you have a look at this one, you'll probably get it for free by now buying a candy-bar being it an old game by now.