Playing Doom and Doom2 (or any doom-engine based game really) on the Doomsday port is nice too. That is, if you're into running older games on newer PC's...
Get SkullTag, grab your Doom2.wad and start fragging!
Another recommendation: Quake with the addon Malice. This was the best when it came out - real multiplayer havoc nonstop. Still nothing can ever beat Doom, though. Get a port like Telejano if you want.
I would have to agree with Narfous - almost every older title is worth your time more than those new crappy "games".
I have read your replies and i have 2 things to say:
first of all this topic should be in MULTIPLAYER forum
secondly: I recommend UT, cuz it`s one of the best FPS i have ever seen, and ,even after many years since it was released, I can say "WOW! a great game" when playing it
You laugh at me because I`m different
I laugh at you because you`re all the same