First of all welcome to the boards. Some of my favortie non mafia films would have to be:
Close Encounter of the Third Kind The Crow Fight Club Forrest Gump Groundhog Day Silence of the Lambs The Shining Taxi Driver Vertigo
I noticed you still have a few mafia related film on the list Turnbull, hehehe.
"Life is so beatiful" - Don Vito in The Godfather novel "My name is Michael Corleone...There are people who'd pay a lot of money for that information" - The Godfather