Nexuiz - because you asked for it
Nexuiz is a free fast paced online multiplayer game (FFPOMG) based upon LordHavoc's Darkplaces engine (visit the Darkplaces booth!).
Aside from offering action-packed gameplay and eye-candy here and there Nexuiz' main feature is an active and
occasionally rather well-mannered community. Make sure to visit the Nexuiz forums! Have a look at the server list and user statistics to see where the action is taking place.