Exhibit A in why Humphrey Bogart has defined cool for generations of film fans. In Casablanca, he runs the world's greatest wartime nightclub (liquor and live music up front, illegal gambling in back) and is a cynic who announces he'll stick his neck out for nobody. Of course, scratch a cynic and you'll find a wounded romantic. When Ingrid Bergman (at her most luminous), with her resistance-hero husband in tow, walks back into Bogie's life, she puts both his cynicism and romanticism to the ultimate test. And he passes; Bogart's conduct here is a virtual how-to of proper guy behavior. Not just how to win back the woman who broke your heart, but how to treat a loyal and wise wingman (Dooley Wilson's indispensable Sam), how to make a noble self-sacrifice, when to use force, and how to bromance your enemies ("Louie, I think this is the beginning of a beautiful friendship").