Yes, the classic FPS shooter from the early 90's. I have a server on skulltag. 24.6.227.104:10666 is the address to it and mizuumi is the password, and most of the time it is up. Once a night or every other night Me, mauve, SK, sometimes we get ClearSky or Rithli to join in on our antics. I have a 16 person limit, although I do not exactly want 16 people on my internets.
This thread can be general discussion about the game, questions or even post up speed runs and what not you enjoy from youtube (or even your demo files!)
http://www.skulltag.net - Skulltag client for online multiplayer action!
http://prboom-plus.sourceforge.net/ - PrBoom - plus for single player and TAS recording!
http://www.chocolate-doom.org/wiki/index.php/Chocolate_Doom - Chocolate Doom for single player for you people who like it old school, but don't want to set up dosbox for original executables!
Doom discussion goes on in #poverty (yes, that's right) on mizuumi once in awhile, join in the fun!