Oops!
Watched some of this in HD recently and noticed around the one hour and 23 minute mark (47-53 seconds on the counter on my player) you can see water from the fountains surrounding the "Xanadu main stage" are spraying water all over the floor and there are puddles of water and the dancers are visibly aware of it and subtly skating around it a bit. Never noticed that before
Nilbog! It's goblin spelled backwards! This is their kingdom!