Games news

Stomped - THE source for games news
Firing Squad - Home of Tresh, Quake guru and owner of John Carmack's first Ferrari
PlanetQuake - The home of everything that is Quake
Doomworld - Excellent site about both New and Old Skool Doom
Doomcenter - ditto
UAC - The official Doom 3 site

Game editing

Rust - Quake editing news
QeRadiant - The editor of choice