First one for me was the World Cup in Mexico '86, although I remember nothing from the event, barr the replays of Maradonas Hand of God against the English, I did at the time know that there was a major event going on, mainly due to getting a money box in the shape of the WC Mascot. The first WC I actually remember watching was Italia '90, the shot out agaisnst Romania in the second round and then the loss to the Italians in the quarters.
I remember the Seoul '88 Olympics, not for any of the events on the field, but for the political discussion that was going on at the time around it. First one I remember watching was Barcelona '92 and that song by Freddie Mecury and the Oprea lass.
Oddly, before England '96, I didn't even know that there was a European football championship, other than reruns of Suttgard '88 on Reeling in the Years, and a song by Christie Moore.
So, over to you, good people of AH, what were yours?