The Cult of the Sound of Music - that's the title of a BBC News website on the film. The BBC does not quite get it though-
The Sound of Music is the epitome of chirpy optimism and innocence. Even though the central element of the plot is a middle-aged man trying to pull a young nun, it's regarded as the height of wholesomeness.
I confess that I have probably seen the film more than any other, including two sing-a-long versions, and the stage show twice! What can I do? It was the second movie my mother ever took me to see. The first was Batman and Robin.
Such films made me who I am today.