A couple are rather substandard in gameplay perhaps, but others aren’t too bad. OpenArena is built on the Quake3 engine… Nexuiz is modified Quake1 engine… Both of those play quite well imo… Warsow looks quite nifty, it’s just that I can’t seem to get it to run on Fedora.
Anyway, you don’t have to play if you think they suck 
Maybe OpenArena is a safe bet to start off with - I think it’s easier to get running and will run ok on most peoples systems. Nexuiz is good too, but it is more graphically intensive than openarena, so people would have to try it out.
Links to OpenArena and Nexuiz:
http://openarena.ws/?about
Ok, so we’ll need to set a time and a date. I’m mostly free this weekend, though I might be gone for the afternoon and evening of Saturday. Also, Is there anyone here who would be able to host a server, or should we just use one of the public servers?