“Léon: The Professional” (Now streaming)

Luc Besson is a messy filmmaker, and his boundless creativity has paved the way for some real duds in his filmography. But when he hits, he absolutely nails it — and “Léon: The Professional” remains the best example of his distinct style. Anchored by standout performances by frequent collaborator Jean Reno as the eponymous hitman and a young Natalie Portman as his far-too-young apprentice, the stylish film blends violence and sentimentality in a way that only Besson can.