Re the brainteaser I posted yesterday. My answer is:
The city where Indiana Jones found the holy grail (the Last Crusade film) was the ancient city of Petra
The leader of the argonauts looking for the golden fleece was Jason
The Modern Prometheus is the subtitle of Frankenstein which was written by Mary Shelley
The godfather of punk was the title given to Iggy Pop
The connection between the four names in bold is that they were all animals in Blue Peter.