Now if you search for movies or TV shows, the Google knowledge panel will have thumbs up and thumbs down icons in the knowledge panel to like or dislike the movie or TV show.
Here is an example of a search for [westworld], a new show on HBO. You can see the like and dislike button taking up prominent space at the top.
Dan Leveille shared this with me on Twitter and it seems live for many types of TV or movie related queries.
Forum discussion at Twitter.