When a video result is returned from a Google search, clicking the video will play inline instead of going to the YouTube page.When clicking the suggested videos on a Google search, the video plays on the Google search page, rather than going to the YouTube page. This also works for the small thumbnail videos (ex. the ones under the "Videos" tab in a Google search), but must be set via the extension options page (More Tools --> Extensions --> Click "Options" under this extension).
Reviews of Youtube Embeds in Google Search extension