Just two examples are below
To see all, check this out :
1- Perhaps the most audacious attempt yet is this graphic from British designer David McCandless. The interactive nature of this one is particularly interesting: When you click on an actor, the graphic shifts to show you that actor's specific relationships:
2- That letter seems to have sparked a trend. Within days, Egyptian blogger The Big Pharaoh made a graphical guide for "complete idiots"