These are all websites that have reviews, commentaries, and information about movies and television shows. These can be found easily through internet searches and ARE NOT scholarly or peer-reviewed sources. But that doesn't mean they aren't valuable - these are useful sources in the background information stage of research (when you're compiling basic background information, these would not be sources to cite in your paper).
You can browse these websites to see what's currently being talked about, or you can use the search function to see if the movie or TV show that you're interested in has been reviewed.