Saw this one on a high school French excursion; I think that we saw Le bonheur est dans le pre on the same day (I remember classmates cheering when the main character got some on a sofa near the end - funny the things that stick in the mind), though maybe that's memory playing tricks. Anyway, it made an impression then, and rewatching it now, I can see why - this is a very cool movie, stylish, suffused in colour (mostly blue) and shadow, shot through with romantic impulses, littered with memorable images and shots, taking in opera, gangsters, warehouse apartments and a cute girl on roller skates.
