I like stories with a non-hero. Stories where the main strength of the main character is considered a weakness by many. Frodo in the Lord of The Rings is a classic example. Some others that come to mind are "The Sword of Shannara" and even "Hitchhikers Guide to the Galaxy" What a about you, what kind of main character do you like? I know sometimes it is not so black and white but you have to start somewhere.