me and my cousin were chatting on the x box 360 the other night while playing a bit of teenage mutant ninja turtles 1989 arcade game (downloaded off x box live arcade) and we got into a chat about what was our first online game we played. mine was quake 1 on my own PC and for my cousin it was mech warrior round his mates house which made him buy a £1500 computer and a copy of the game the next day hehe.
also include most addictive online game, for me it was counter strike and for my cousin it was steel battalion (think i spelt that right) on the x box.