The guys at GameSpy have posted interviews with Tim Willits & Todd Hollenshead about DOOM 3, and also with Rick Johnson about Quake 4. They also have their own keynote highlights.

GameSpy: On the single-player end, what stage are you at with DOOM 3? Tim Willits: The technology's mainly done, although there are still optimizations that we can do. The story's all done and the script is all done, and the guys are busy getting the fun factor into the game, creating the great scenarios and sequences and the fun events for the player to experience. And we just have to keep doing that until the game's great.