Keep track of the films and TV show episodes you have seen. Follow shows and have your own TV calendar, and never forget your favourite TV show episodes.
IMDb - Internet Movie Database
Readerware Book Database - The easiest, fastest way to catalog your books, nothing else comes close.
Flixster - Share movie reviews and ratings with friends.
Tellico - Tellico is a KDE application for organizing your collections.
Simkl - Simkl is a TV, anime, and movie tracker that keeps a history of all the shows and movies you watch in one, central location. It’s a mobile app, a website, Google Chrome extension to keep track of everything you watch and integrates with many TV apps
Book Catalogue - This is a simple book catalogue application, to store a list of your books.