Fireworks? ehm...
Anyway I agree with Epona on the Elysium and Mithril Hall, visit those two as well. As for other places...
The Elysium Gaming Project. A side project of the Elysium, specialized in hosting online 2nd and 3rd edition D&D games. Great fun!
Valhalla. A friendly forum as well, but down at the moment.
Movie Magic, a brand new forum about the discussion of movies.
Smoothgame, another nice new message board, hosts another D&D game I participate in.
Myth Drannor, yet another message board run by Blademaster (Victor von Steiner) and kiwidoc.