Bonnie & Clyde (1967, Arthur Penn)
Faye Dunaway looks human in this, which is a bonus I freely admit

.
When a local ne'r do well shows interest in her, a waitress enters a world of instant gratification (well ...

). Ably directed by Penn, and backed up by Michael J Pollard and Gene Hackman, Beatty plays Barrow as an optimist. Imagine him playing Richard Speck instead

. Ahem. Film.