I remember having good fun playing all the old Doom games online (dwango, anyway), and then all the Quake games, too. Kinda sad how that all ended with Doom3.
I miss the days when lots of mods were popular, maybe its just me but it seemed like at some point everything became about CS and CS clones, and now total conversions are just too much work except for the people who think its going to get them hired (and probably quickly fired) by some major company.
I miss the days when games didn't strive for the pseudorealism that bores me to death. "Real guns" got old real fast!
Uh, yeah.. Q3A patch, pretty weird, huh!