These 'Best Ofs' list some of the higher profile people, movies, products and topics in a category. The topics in our Best Of categories are determined primarily through a combination of internal and external resources. We use externally published information from sources online such as Billboard, Nielsen, Box Office Mojo, etc. along with our internal data on Tweet volumes with sentiment and query volumes in the app. To that we add a bit of editorial license to make sure some old standards make the cut.