I've experienced pirates... But I just stay in the cabin and look out of the window wimpering.
Yeah FFXI has thrown some random crap at me that's thrilled and shocked me, but I can't actually remember anything specifically. Oh here's one, first time I experienced Besieged... Just wandered into Al Zahbi "OMG MAMOOL JA ARE ATTACKIN'!" That was quite fun. I mean I couldn't do jack, but it was still fun.