This is, IMHO, the best movie ever made. It has everything, drama, serious theme, romance, action, great performances by the leads, great character turns but the supporting parts, a well written plot, great camera work, great score, memorable lines you name it. It is also, not surprisingly, the textbook definition of a studio system film. Favorite scene - the Marsielles scene, where it becomes clear that Rick still cares, under the facade.