This is a Google+ hangout video (organized by Google Play) of Steven Spielberg and Joseph Gordon-Levitt (acted son of Lincoln) with fans during the release of the movie Lincoln.
During this hangout Spielberg joined from Los Angeles studio, members from TakePart.com in New York and some pre-selected fans joined from various places around the country.
Lincoln Movie Trailer Google+ Hangout Video
This hangout was the first time a movie trailer was ever played in a Google+ hangout. Another point to note is, this hangout was live televised in Time Square’s Jumbotron (large display) that helped thousands to view this hangout.
You must check this out, this is definitely worth watching. Enjoy!