Casablanca is arguably the best piece of movie romance ever to work its way onto the silver screen. It's all there: love and war, heroes and villians, sentiment and more sentiment. If that's not enough there's Humphrey Bogart and Ingrid Bergman. And if that's still not enough there's the most touching line in all of movie history: "The problems of three little people don't amount to a hill of beans in this crazy world." Bogart reportedly picked the movie's ending because it made his mother cry. If it doesn't do the same to you, your heart is hard and your brain too soft. This is the second feature in the Brattle's Bogart Festival; it plays for a week starting tomorrow.

The Janus Film Festival is one of the main attractions of the Cambridge movie world, and it's back again for another go-round at the Harvard Sq. Theatre. Each day features a new double-bill of new-wavey classics. The series begins Wednesday with Truffaut's Shoot the Piano Player and Bergman's Smiles of a Summer Night. The Truffaut is wonderful but confusing entertainment and the second film is Bergman at his lovliest and most comprehensible. On Thursday you can check out Marcel Camus's Black Orpheus, a visually stunning but cineamagraphically blurred document on life in the slums of Rio de Janero.

The Promised Land, a new documentary by Susan Sontag, takes a look at Israel just after the Yom Kippur War. Sontag has been serving her film-making apprenticeship for a long time, and with this film her efforts come to fruition. It's playing at the Central Cinema.

White Heat and Each Dawn I Die, two of Cagney's greatest movies, move into the Welles tomorrow. In Each Dawn Cagney plays a hard-nosed journalist (Cagney's always hard-nosed) who learns what prison life is like first hand.