Just who was the real Indiana Jones? Indy's creators George Lucas and Steven Spielberg say the inspiration for the whip-cracking adventurer came from the explorers featured in 1930s and 40s movie serials. In turn, many writers of these serials say their inspiration came from the real-life adventures of Roy Chapman Andrews. Another source for the Indy legend is the German scholar and Grail-hunter, Otto Rahn. Both embody the spirit of Indiana Jones, and lived real lives of scholarship, exploration and danger.

• Leonard Nimoy
• Rod Roddenberry