An Easter egg in the latest version of Siri has it sympathizing with the artificial intelligences in movies.
A special feature on the UK Steelbook edition of Prometheus reveals that Weyland's mentor was Eldon Tyrell, creator of the replicants in Blade Runner. It makes about as much sense as anything else in Prometheus.
Joanna Cassidy, who played Zhora in Blade Runner, says there was an extended snake dance scene planned for her character that was never shot. Now, more than 30 years later, she has filmed the scene herself.