Bahaha, the example content is freaking hilarious.
I really like it. Having the chat side-by-side with the forum threads (instead of at the top) makes them both accessible at the same time, which is a really smart idea.
IMO, the forum section should show the tree structure so that users always know "where" they are, e.g. GMG Forums -> Announcements -> Updated GMG.
I'm not sure about the list at the top (All, Coding, Graphics, etc.). Would those be links to subforums, or would they be links to download areas? If they link away from the forum+chat page, they should be moved outside of the rectangular area where forums and chat are, so that users aren't surprised when the links bring them to a page which lacks forums and chat.