http://www.transgaming.com/ The official TransGaming Technologies website provides details of games that are directly supported under Cedega.
http://www.linuxgames.com/ A good source of up-to-date information about the state of Linux gaming.
http://zerowing.idsoftware.com/linux/doom/ Includes a complete how-to and troubleshooting guide for running DOOM 3 under Linux.
http://www.unrealtournament.com/ The official site of Unreal Tournament.
http://www.nvnews.net/vbulletin/forumdisplay.php?f=14 The Official Nvidia Linux driver support forum.
http://www.nvidia.com/object/linux.html Home page for the Nvidia Linux drivers.
http://tinyurl.com/3pm2v Home page for the ATI Linux drivers (courtesy of tinyurl.com).