One of my favorite experiences in FFXI was when I camped Kreutzet for my Sirocco Kukri. After waiting approximately 9 hours without a pop, wind weather finally showed up and he spawned.
"Kreutzet pop! Need help ASAP!"
The only problem was, there were only 5 people on my LS at the time, and I think all but 1 were busy, and that 1 was at least a 20 minute trip away. So I did the only thing a solo thf could do... I solo'd, and I kited, and I solo'd some more.
Somehow, after close to an hour of near death, bloody bolt spam, running from triple stormwinds, etc, I was able to beat him. To this day I don't know how I did it. I know for a fact I zoned him once and was incredibly lucky that he didn't despawn on me.
By the time the hour was up, about 4 people from the LS had logged on and come to watch. I asked them not to help unless I was clearly going to die, and even then to only claim it and raise me so I could finish my task. I never died, I never needed the assistance, and I got my prize. It was one of those moments in gaming where you just put your controller down (playing on PS2 at the time with no windower, plugins, etc) and smile. It was truly an amazing feeling. I hope to be able to achieve that again in ARR.