Trivia: Kim Cattrall was surprised when she got to the set for the prison scene one morning, as no one told her she would be hogtied for the entire scene (in the story, it was due to a deleted scene when she made trouble for her guards). She endured it like a professional, occasionally having her gag removed so she could drink water. When asked by John Carpenter whether or not she was uncomfortable, she simply replied 'I've been in tighter situations than this!'
Trivia: I was an extra on the Highlander Scottish battle scenes and since Scottish weather isn't the most hospitable, all the extras got very drunk on whisky to keep warm. When you see the Scottish charge insanely, it's because we were all drunk, which led to us picking out the wrong weapons and kilts for the next days filming because no one could remember who had what.
Trivia: Jean M Auel, who wrote the book, was not at all pleased with the movie.
Trivia: Unbeknownst to the cast and crew, several of the skeletons ordered for the production were real human skeletons (as opposed to replicas). When this was discovered, some crew and cast members demanded an exorcism or cleansing be performed on set, as they had already been feeling uneasy on-set before learning this, and felt the real skeletons may have brought some unwanted spirits to the set. Co-star Will Sampson, who like his character was a real-life shaman, offered to return to set one night after everyone else went home in order to perform an exorcism ritual. Reportedly, the mood and feeling on set greatly improved afterwards.