Singin' in the Rain (1952)

The title number, Singin' in the Rain (1952) Gene Kelly splashing through puddles with an umbrella is about as cheerful as a few minutes of film gets, and it needs no knowledge of the story. It works especially well with someone for whom a whole film is hard going, because the pleasure is all in the movement and the tune. Ask whether they saw it at the movies, who they went with and what a ticket cost.