Don't you ever wonder what your exact impact on the world around you is? We often say that we do some things more than others, but do we really? Nicholas Felton of New York, since 2005 has been on, what some people say, an obsessive quest to record all of his interactions, his purchases, his time spent, places visited, etc. Every year, he has created a well designed "Feltron Annual Report", complete with info graphics and data lists from everything from beverages consumed to total miles walked. An interesting quest for truth and reality.
I've heard about Feltron through several sources, most recently the podcast 99% Invisible, which I highly recommend.