Google is not leaving any thing that can be bring into it's newest fast growing Social network Google+. It was the King of online videos You Tube, now to get into the Google+ with a slider at right. Google+ user can run thier favorite video by typing what they want to view on the slider which will open the popup window with a long list of playlist.
What more can you do?
While playing the video on can choose from playlist and easily switch to nowplay. Also user are allowed to shared the video with their circle. Video is also +1'd while watching.