Films that I saw, on TV or at the cinema, prior to the age of 16 or so that had a major impact on me - in the approximate order in which I saw them:

• The Amazing Mr Blunden
• Jason and the Argonauts
• Mon Oncle
• Star Wars (before it became A New Hope)
• The Third Man
• The Omen
• Stalker - which pretty much marked my transition to adult SF