[youtube=http://www.youtube.com/watch?feature=player_embedded&v=TZdFOFOqsIM#at=41] The teaser video for the LG Optimus 3D shows just how the phone’s glasses-free 3D display can work in almost any situation. The one they used though was practicing yoga.  You have to be very very good at yoga to old a phone and pose at the same time.  I can’t wait to see what the working…