Ok I'll start.
When the party wiped one toon would stay in while the others ressurected, buffed at airships and came back in fresh.
Since some of you are new or might have forgot this is before flavor toons ruled and everyone could do everything. Before difficulty streaks were so important and they ruined most of the raid gear with too much auction house power creep. When Bloodstones were awed at and most raids upto TOD were run on a regular basis. Before heroic was gimped in favor of epic content making 2/3rds of the game a ghost town. When parties needed a healer and waited forever for one to show up. When soloing and short manning was the exception instead of the norm.