* While Salieri is telling his story, Father Vogler takes him seriously. You can even see him getting emotional at points. In a strange sense, Salieri got what he wanted in the end: someone who understood his viewpoints and possibly viewed him as being better than Mozart.
* The movie's aesop calls this into question. How many talented people have worked their whole lives to become good at what they do, only for someone naturally gifted (or at the very least undeserving of fame) to come along and completely overshadow them?