Doom 3 was a good game, scary enough but only due to the close up view and how the demons jumped right in front of you..
Still remember the duct tape trick for the flashlight..
I managed to get Doom3 installed on my windows 7 systems, however couldn't keep it at 1080 x 1920 as each time I quit the game it would reset to 800 x 600.. Quite annoying - still a good game.
If doom 4 is using the same mega textures as Rage - erm hope they get it this time where if you look close to an object it doesn't look like we're back in 1990... Rage was awesome to look at until you zoomed in on object - then it turn real ugly real quick...