Revealing mistake: Goth's primitive inhabitants are pre-industrial. They wear furs, use swords and other ancient weapons, and live in tents. So where do they come by their shiny black plastic ski goggles? Goth-mart?
Visible crew/equipment: During the fight in the banquet hall, the spikes on Gola's mace bend several times, most obviously when he falls back onto the pillows. Must be tough bashing your enemies' skulls in with a foam rubber weapon.
It's not every day you can shoot your wife in front of millions of witnesses and get away with it. Klyn, the woman behind the console who sounds the alarm before Avon shoots her, was played by Paul Darrow's real-life wife, Janet Lees Price.