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.
Flixster - Share movie reviews and ratings with friends.
IMDb - Internet Movie Database
Entora - Entora is your one-stop entertainment source where you can follow all your favorite artists and keep up-to-date with new releases in movies, music and TV.
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
Criticker - The independent movie, TV and board game recommendation engine and community.
Letterboxd - Letterboxd is a social site for sharing your taste in film, now in public beta.