Okay, but to really make it good I think you should give forum members the option of enabling the Chat Room to be render at the top of the forum page, for every page. So we can sort of see it as a feed. Games will be set-up much faster, and use of the chat room will actually happen, because people will read whatever random crap is going on in the chat as they are surfing the forums regularly.
If you wanna really go crazy (this doesn't use the chat), just let forumers register events that pop up as rows at the top of the forum in a distracting color. Like:
"Conduit @ 5:15 with Maxi (Wii Num: 80085) Click here to rsvp."
Offer cool features to make people use your site over others...