I actually play UT99. There are some of the mods that bring some very interesting game play.
Gaming certainly helps my reflects and keeps my mind sharp.
It probably doesn't have many players anymore, but my favorite mod was Thievery UT. I've played some rounds that were, no hyperbole, the most fun I've ever had playing games.
One of the guys involved was actually working on Splinter Cell and I'm pretty sure much of what we were experimenting with has, in some ways, influenced that game. And two of the guys ended up doing games full-time for Valve after working on Alien Swarm, and now Left 4 Dead. If only they'd do a new version of Thievery! Back to their roots...
Yeah man! Sign up for our tournaments and leagues! It's still going strong and actually seems to be growing since the advent of newnet, a modern netcode that smooths out gameplay a ton and lets people from all over the world play together.
Now I'm going to have to get my old gaming machine back out. Damn you sir. Damn you.
:)