The new SharePlay feature is actually quite cool. You wouldn't think it would be terribly difficult to share a movie or TV show on a video call, but actually due to the DRM that everyone uses it's almost impossible.
Using the normal screen sharing feature of most video conferencing apps simply doesn't work and shows a black screen instead of the video. The workaround that people I know have been using during the pandemic is the torrent the media and play from a local file which works fine, however it would be nice to have more legitimate means of doing it.