For the Doom 3 folks, there are some new shots here. They show floating attacking heads (not as scary as the big ass floating eye things from the original IMHO), the title screen, and some spider things (oooh, check out the lighting). As E3 has started it sounds like there will be more screenshots or a movie or something doom wise coming soon (fingers crossed).
There are some absolutely awsome shots of Halo2 here... wow, talk about nice lighthing and texturing. Course, it'll be another 5 years before those who refuse to buy an X-Box (or who can't afford it) will see anything Halo wise for the PC....
As always, Steve over at shacknews has the scoop.