I haven't been here in a long while, and, unfortunately, it's problems bringing me back. I got the DLCs for Fallout 3 just recently and now I'm playing through Broken Steel. There are some minor spoilers ahead if you haven't finished BS.
I just passed the part in the presidential metro, and now I'm at the door leading to Adams Air Force Base. When I go through, all I get is a glitchy flickering mess of a scene. If I turn around it stops, so it only happens when I'm facing the stairs in front of me as soon as I come in. I have no idea what might be causing this, but judging from the glitch happening only when looking at one part of the screen, I'm guessing there's a bugged object on the map. Has anyone else had this problem before? See pic to better understand what I'm trying to describe. It's a page stretcher, so I'm just posing a link.
http://img801.imageshack.us/img801/861/wtfmy.jpg