A few months ago, Google began showing top voted tags for movies knowledge panels, before that like and dislike buttons - now Google is showing in some cases audience reviews, instead of showing reviews from the main critic websites.
Jogesh Sharma posted a screen shot of the audience reviews section on Twitter:
It seems Google is showing their own movie reviews and lets searchers add their own reviews as well.
I personally cannot replicate it for this query or other movie queries. Can you?
Forum discussion at Twitter.