First off my hats off to the fine people at id software for porting a linux client for Doom 3 and the newer Quake 4. Now the installation was not flawless I did have problems in Suse 10 alsa sounded like bad techno and oss just plain didn't work. I found out that I had to give my normal user permissions to use audio.I went into user management ticked audio and had oss sound in Suse 10.
Then when I tried changing the video quality the games screen only took up 1/4 of the screen or had a 1 inch bar across the top of the screen.When I checked out my xorg it said I was using a vesa monitor driver. I actually have a KDS LCD but the proview driver worked great for me.
Both games load pretty fast and on average throughout game play I average about 80-90fps.I had a new sound card(Audigy 2) I did install which was better then the one on my motherboard(AC97)
This use to be a weak point for linux up till now I really didn't get into the games that much.The best game for linux was tuxracer.Which is alright if your 6.I refuse to go back to windows.And have given up on wine. I did get steam installed but half life 2 was just plain ugly under wine.Maybe the people at valve software could learn a lesson from id software.Thanks again id.

I agree, seriously wish everyone followed ID software's example. M$ especially ( would love to play Halo2 )

Yes we all love ID here in linux land
If you ever decide not to be a cheap prick though, Cedega is definitely worth the money if you want to play HL2 and the other Source games. I use it and it works flawlessly and since 5.1, I get the same frames I get under Windows!