I meant that in a loose sense, they're both fast-paced competetive deathmatch games. I guess I'll take a look for a torrent of ut99. I've got 2k4, but apparently you guys don't care for that.
I'd pick up a copy of the real version of quake 3, but I've got quake 4, and they play similarly enough for me to not have a major preference between them. I do prefer Q4's greater weapon variety, though. The nailgun and grenade launcher particularly.