Been playing a lot of Quake III: Arena again, recently, mainly because I've just managed to get the OS X version working, after I bought a PC/Mac bundle of Q3A and Q3 Team Arena in the January sales, but couldn't get the OS X implementation to run (I refused to run it under Classic because of the sucky performance).
Was going quite well until some skin and weapon installations made my copy and Damian's copies incompatible over the WLAN. Very annoying, will hopefully get it fixed soon, as I've been a little sick of playing Unreal Tournament 2003 (which actually refused to display any custom skins in my copy, probably didn't install right, but at least we were able to play).