1. The Ronettes, 'Be My Baby' in 'Mean Streets' (1973)
This is where it all begins – and really, this is as far as it could go. With this moment, director Martin Scorsese invented a whole new way to use rock & roll to tell a story, right in the opening scene of his Little Italy street-crime tragedy. Late at night, small-time gangster Harvey Keitel hears the Phil Spector teen romance of "Be My Baby" playing in his head. It's the soundtrack to his memories, all his dreams and fears, all his Catholic guilt, all his New York groove. The song sums up his world in three minutes, except we can already tell it's about to explode. Every movie tries to do this same trick now (Dirty Dancing even swiped the same song), but nobody does it like Scorsese. After Mean Streets, neither music nor the movies would ever be the same.