SINGIN' IN THE RAIN, 1952, Warner Bros., 103 min. Dirs. Gene Kelly, Stanley Donen. One of the greatest screen musicals ever made, a sublime marriage of song and dance, innocence and nostalgia, heart-tugging romance and surreal comedy (especially in co-star Donald O'Connor's "Make 'Em Laugh" routine). Gene Kelly shines as a silent-movie idol whose career is imperiled by the coming of sound - until he hooks up with lovely ingenue Debbie Reynolds.