My friend Nico recommended me to join GetGlue, an online community for people who love movies, music, books and TV series. You can check into these things, and easily share it on Facebook and Twitter. There are also iPhone, iPad and Android apps. If you decide to join, please follow me by going to my profile. See you there!
Update February 2, 2014: GetGlue has jumped the shark, removing all the great things about the website, totally ignoring complaints for the users. So from now on I use this social network instead. Give it a try!