The film that established Jane Birkin and Serge Gainsbourg as the “it” couple of the era, this très groovy time capsule follows a 40-year-old commercial director (Gainsbourg) as he pursues a fling with an 18-year-old British ingénue (Birkin). The two embark on a torrid love affair that takes them from Venice to London to Paris and back, an irreverently funny, breathlessly paced tour of Swinging Sixties Europe. The mod decor and loungy soundtrack offer pleasures aplenty, but the real attraction is Birkin and Gainsbourg. Oozing chemistry and cool, they’re Exhibit A in effortless Gallic chic.