I used to have a SCG videotape of various live footage. In one segment they're doing one of their absurdist theater things, backed by a choir of 30 standing up on stepped risers. In the middle of the performance the whole platform collapses, choir and all. funny.
Actually I think about an hour of that video was the Sun City Girls running around on acid with a camcorder. unwatchable, which was probably the point.