Well, I haven't checked to see which examples they provide on the guide... but off the top of my head... change of species, change of gender, making us think we've all been part of this village for generations, or simply slightly different versions of ourselves... there have been a couple incidents with people being instantly transported at random to different places...

Oh, and last halloween we all got stuck in costumes that became progressively more real as it came closer to the holiday in question, and there were some nasty goings on around the town at night too.