I've had enough of this crap. Doom 3 won't come out soon enough to not be a huge disappointment. Also, you are definitely going to have to upgrade your computer if you want to play DM, and that goes for idiots that have already (and in some cases recently) upgraded for this game, so many months before it is even released.
I never thought I would ever read that a GF5900 would experience slowdown at 640 x 480 with no AA: that is a very, very scary indicator of the final games requirements if you want to play DM.
As for HalfLife 2: It looks like shite, even shite-ier in those high-res binks (For Godssake, turn on the AA). Don't the binks make you feel like you are looking at a slightly crisper rehash of the original.
In the "barricade" movie the Combine soldiers are no challenge compared with the "enemy" soldiers from the original. They take so long to reload you could kill them with your crowbar before they get to shoot you again.
So you guys arguing about which game is the best: get outside and get some fresh air. Don't be alarmed by that yellow ball in the sky: It is commonly referred to as the sun!! Get a life and try and meet a good woman: There is no game that comes close to good sex (except maybe Quake 1 DM4 1-on-1, tehehe).