Just To Keep This Here Updated
The doom 3 video showing at E3 has already been posted in all it's glory on IGN. Unfortunately, only those with a subscription can get at it. (If you do got a subscription, by all means, drop by #TF and share!)
For us rest, there's a not too shabby shakycam version of the same trailer at this link here:
This is in WMV format btw...