Léon, the Professional, is a brilliantly twisted and complex film focusing on the relationship between a good-hearted yet ruthless hitman, the young girl who comes under his guidance after her family is massacred, and the sociopathic DEA agent Stansfield, who performed said massacring. A certain houseplant also plays a significant role. Jean Reno and Natalie Portman are both exceptional, and Gary Oldman renders forth a truly iconic performance as the depraved, mercurial, cunning, pill-popping Stansfield. Each character has their own internally consistent moral code. Luc Besson directed this fascinating, haunting, offbeat, darkly comical film.