Wow, sorry for being so MIA these past few weeks. Life has been rather hectic with work, finding a new apartment, etc. SO, here's so big news that we've missed here:
There are a bunch of new Fallout 3 screenshots out at the Czech website Tiscali Games. There's a brahmin in one of them, and a more detailed pic of the Behemoth thing. Check them out here.
EDIT: At the request of Bethesda, we have removed the links to Tiscali. Apparently not putting the images on DAC wasn't enough. We're now not allowed to even link to them. It won't take much to find them through a Google search, though.
EDIT Mk. II: After more word from Bethesda, it turns out there's no problem if we link to them; just if we host the scans.
Thanks to Brother None and NMA.